Publications by authors named "Masoud Salavati-Niasari"

107 Publications

LaSnO/g-CN nanocomposites: Rapid and green sonochemical fabrication and photo-degradation performance for removal of dye contaminations.

Ultrason Sonochem 2021 Sep 24;77:105678. Epub 2021 Jul 24.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box.87317-51167, Iran. Electronic address:

The deficiency of drinking water sources has become a serious crisis for the future of the world that the photocatalytic process is one of the most favorable methods for removal of artificial dyes and poisonous organic impurities. In the present study, rapid ultrasonic treatment was performed to obtain LaSnO/Graphitic carbon nitrides (LSO/CN) nanocomposites with advanced photo-catalytic performance. Broccoli extract was utilized as a natural surfactant with active surface groups to control nucleation and growth of formed crystals with the creation of spatial barriers around the cations, and finally prevent nano-product agglomeration. Changing experimental parameters in synthesis reaction in turn offers a virtuous control over the nano-products size and shape. The shape and size distribution of particles was considered via diverse characterization techniques of microscopic and spectroscopic. The photocatalytic behaviors along with a kinetic study of the nanoparticles were examined by elimination and degradation of different artificial dyes under the UV waves. Effect of particle size, weight ratio of LSO:CN, type of dye, scavenger kind, dye and catalyst loading was designated on altering proficiency of nano-catalyst function. Also, the probable mechanism of removal dye by photocatalytic function was studied.
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http://dx.doi.org/10.1016/j.ultsonch.2021.105678DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8329518PMC
September 2021

Injectable hydrogels based on oxidized alginate-gelatin reinforced by carbon nitride quantum dots for tissue engineering.

Int J Pharm 2021 Jun 30;602:120660. Epub 2021 Apr 30.

Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box11155-9161, Azadi Avenue, Tehran 14588, Iran.

Stem cell treatment is promising in the various disorders treatment, but its effect is confined by the adverse conditions in the damaged tissues. The utilization of hydrogels has been suggested as a procedure to defeat this issue by developing the engraftment and survival of injected stem cells. Specifically, injectable hydrogels have drawn much attention due to their shape adaptability, ease of use, and the capability to reach body parts that are hard to access. In this study, the thermosensitive injectable hydrogels based on oxidized alginate, gelatin, and carbon nitride quantum dots (CNQDs) have been fabricated for tissue engineering. The mechanical characteristics of the nanocomposite hydrogels were investigated by rheology analysis. The results show that increasing the amount of CNQDs improve the mechanical strength of the nanocomposite hydrogels. The Cross-section morphology of freeze dried hydrogels comprising 0.25, 1.5, and 3.0% CNQDs indicate porous structure with interrelated pores. Besides, the result of in vitro degradation reveals that the hydrogels comprising CNQDs are more durable than the one without CNQDs. A reduction in the biodegradation and swelling ratio is perceived with the addition of CNQDs. The cell viability and attachment show that the nanocomposite hydrogels are biocompatible (>88%) with great cell adhesion to osteosarcoma cell line MG63 depending on the presence of CNQDs.
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http://dx.doi.org/10.1016/j.ijpharm.2021.120660DOI Listing
June 2021

Toxicity evaluation and preparation of CoWO nanoparticles towards microalga Dunaliella salina.

Environ Sci Pollut Res Int 2021 Jul 10;28(27):36314-36325. Epub 2021 Mar 10.

Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, I. R, Iran.

The increasing use of nanoparticles and their many applications increases the likelihood of their presence in the environment. This possibility of presence necessitates the study of the effect of these substances on aquatic species. In this research, CoWO nanoparticles were synthesized by the ultrasonic method. Various conditions in the synthesis process were investigated to obtain the appropriate size of the nanoparticles. After selecting the optimum particles, these nanoparticles were used to investigate their effect on the growth of Dunaliella salina. For this purpose, the algal cells were subjected to three different concentrations of nanoparticles (15, 30, and 60 mg/L). The study results on algae growth parameters showed that these parameters depend on the value of nanoparticles. At 15 and 30 mg/L concentrations of the nanoparticles, numbers of cells, specific growth, biomass, and pigments showed a significant boost compared to the mentioned parameters of the control treatment. Measurement of malondialdehyde (MDA) showed that this parameter was directly related to the increase in the concentration of nanoparticles. At 60 mg/L of the nanoparticles, the MDA level was higher than the control and other treatments. This increase reflects the destructive effect of the nanoparticles on algal cells. Finally, the results showed that algae could be useful for studying the environmental effects of nanoparticles and their safety.
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http://dx.doi.org/10.1007/s11356-021-12946-2DOI Listing
July 2021

Porous hollow Ag/AgS/AgPO nanocomposites as highly efficient heterojunction photocatalysts for the removal of antibiotics under simulated sunlight irradiation.

Chemosphere 2021 Jul 25;274:129765. Epub 2021 Jan 25.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box. 87317-51167, Iran. Electronic address:

Antibiotic pollutants are a serious and growing threat to human health and the environment that efficient measures must be taken to eliminate them. Here, we report the facile fabrication of porous hollow Ag/AgS/AgPO heterostrucutres for efficient photocatalytic degradation of tetracycline under simulated sunlight irradiation. The morphology manipulation and hetero-nanocomposites construction through a coprecipitation-refluxing approach were applied to enhance the photocatalytic performance of the Ag/AgS/AgPO products. The photodegradation outcomes indicated that the heterojunction Ag/AgS/AgPO photocatalyst with a suitable band gap energy of 2.17 eV, has better degradation performance (∼95%) than individual AgS and AgPO structures after 120 min of simulated sunlight irradiation, even after five recycles. The good photocatalytic activity of Ag/AgS/AgPO nanocomposites could be mainly attributed to the unique hierarchical architectures, promoted visible-light harvesting, reduced a recombination and boosted separation of electron-hole pairs originated from the as-formed heterojunctions. Moreover, we proposed a photocatalytic degradation mechanism based on the radical scavenging results, which disclosed that the O and OH species perform essential tasks for the photodegradation of antibiotics by Ag/AgS/AgPO nanocomposites.
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http://dx.doi.org/10.1016/j.chemosphere.2021.129765DOI Listing
July 2021

Hydrothermal architecture of CuVO nanostructures as new electro-sensing catalysts for voltammetric quantification of mefenamic acid in pharmaceuticals and biological samples.

Biosens Bioelectron 2021 Apr 20;178:113017. Epub 2021 Jan 20.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box.87317-51167, I. R, Iran. Electronic address:

A novel nano-electrocatalyst based on CuVO is successfully fabricated by one-pot hydrothermal treatment and used for the examination of mefenamic acid (MFA) in real samples, for the first time. Controlling the combined factors of complexing agent's (4, 4'-Diaminodiphenylmethane, DDM) molar ratio, hydrothermal temperature, and reaction time is responsible for providing the optimal structural and morphological changes of the crystals. The effect of operating conditions of CuVO nanostructures is investigated using FT-IR, XRD, and EDX as structural and elemental analyses. Also, other properties such as particle size and morphological studies were accomplished by FE-SEM, and HR-TEM. The results reveal that the monoclinic phase of CuVO with particle size of 34 nm is the outcome of hydrothermal treatment of 200 °C for 18 h, which DDM template with molar ratio of 2.0 M serves as phase stabilizing matrix. Herein, it is demonstrated the electrochemical biosensing characteristics of the nano-scale CuVO modified carbon paste electrode (CV/CPE) by voltammetry techniques. The drug sensing capabilities of the boosted CV/CPE platform exhibit linear dynamic range of 0.01-470 μM, and low detection limit of 2.34 nM with excellent sensitivity and selectivity. The appropriate electrical conductivity and layered structure of the compound causes a valuable platform for minimally invasive assessment of MFA in biological and pharmaceutical media with recovery rate of 98.3%-110.0% and 93.6%-106.7%, respectively. As a result, the proposed nanostructures as great candidate offer excellent electrocatalytic activity in biomedicine applications.
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http://dx.doi.org/10.1016/j.bios.2021.113017DOI Listing
April 2021

Copper iodide decorated graphitic carbon nitride sheets with enhanced visible-light response for photocatalytic organic pollutant removal and antibacterial activities.

Ecotoxicol Environ Saf 2021 Jan 28;208:111712. Epub 2020 Nov 28.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan P.O. Box 87317-51167, Iran. Electronic address:

The photocatalytic process is an environmentally-friendly procedure that has been well known in the destruction of organic pollutants in water. The multiple semiconductor heterojunctions are broadly applied to enhance the photocatalytic performances in comparison to the single semiconductor. Polymeric semiconductors have received much attention as inspiring candidates owing to their adjustable optical absorption features and simply adaptable electronic structure. The shortcomings of the current photocatalytic system, which restricts their technical applications incorporate fast charge recombination, low-utilization of visible radiation, and low immigration capability of the photo-induced electron-hole. This paper indicates the novel fabrication of new CuI/g-CN nanocomposite by hydrothermal and ultrasound-assisted co-precipitation methods. The structure, shape, and purity of the products were affected by different weight percentages and fabrication processes. Electron microscope unveils that CuI nanoparticles are distributed on g-CN. The bandgap of pure carbon nitride is estimated at 2.70 eV, and the bandgap of the nanocomposite has increased to 2.8 eV via expanding the amount of CuI. The CuI/CN nanocomposite has a great potential to degrade cationic and anionic dyes in high value because of its appropriate bandgap. It can be a great catalyst for water purification. The photocatalytic efficiency is affected by multiple factors such as types of dyes, fabrication methods, the light sources, mass ratios, and scavengers. The fabricated CuI/CN nanocomposite exposes higher photocatalytic performance than the pure CN and CuI. The photocatalytic efficiency of nanocomposite is enhanced by enhancing the amount of CuI. Besides, the fabricated CuI/CN revealed remarkable reusability without the obvious loss of photocatalytic activity. The antibacterial activity of the specimens reveals that the highest antimicrobial activities are revealed against P. aeruginosa and E. coli. These results prove that the nanocomposite possesses high potential for killing bacteria, and it can be nominated as a suitable agent against bacteria.
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http://dx.doi.org/10.1016/j.ecoenv.2020.111712DOI Listing
January 2021

Hydrogel beads-based nanocomposites in novel drug delivery platforms: Recent trends and developments.

Adv Colloid Interface Sci 2021 Feb 10;288:102316. Epub 2020 Nov 10.

Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Iran. Electronic address:

The present article evaluates the composition and synthesis of hydrogel beads. Hydrogels, owing to their known biocompatibility, are widely used in drug delivery as a host (or drug carrier). Hydrogels, owing to their physical, chemical and biological properties, are popular in many aspects. Hydrogels are crosslinked-hydrophilic polymers and commercialized/synthesized in both natural and synthetic forms. These polymers are compatible with human tissues, therefore can be potentially used for biomedical treatments. Hydrogels in drug delivery offer several points of interest such as sustainability, and sensitivity without any side-effects as compared to traditional methods in this field. Drugs can encapsulate and release continuously into the targets when hydrogels are activated/modified magnetically or by fluorescent materials. It is crucial to develop new crosslinked polymers in terms of "biocompatibility" and "biodegradability" for novel drug delivery platforms. In the event that the accomplishments of the past can be used into the longer terms, it is exceedingly likely that hydrogels with a wide cluster of alluring properties can be synthesized. The current review, offers an updated summary of latest developments in the nanomedicines field as well as nanobased drug delivery systems over broad study of the discovery/ application of nanomaterials in improving both the efficacy of drugs and targeted delivery of them. The challenges/opportunities of nanomedicine in drug delivery also discussed. SCOPE OF THE RESEARCH: Although several reviews have been published in the field of hydrogels, however many of them have just centralized on the general overviews in terms of "synthesis" and "properties". The utilization of hydrogels and hydrogel-based composites in vital applications have been achieved a great interest. In this review, our aim is to recap of the key points in the field of hydrogels such as; a) hydrogel nanocomposites, b) magnetic beads, c) biomedical applications, and d) drug delivery. In the same vein, these outlines will be expanded with emphasizing on the boon of magnetic beads and recent developments in this area.
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http://dx.doi.org/10.1016/j.cis.2020.102316DOI Listing
February 2021

Enhanced visible-light-driven photocatalytic performance for degradation of organic contaminants using PbWO nanostructure fabricated by a new, simple and green sonochemical approach.

Ultrason Sonochem 2021 Apr 29;72:105420. Epub 2020 Dec 29.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box. 87317-51167, IR, Iran. Electronic address:

Water contamination has turned into a critical global concern that menaces the entire biosphere and has a notable effect on the lives of living beings and humans. As a proper and environmentally friendly solution, visible-light photocatalysis technology has been offered for water contamination removal. There is a strong interest in the design of the efficient catalytic materials that are photoactive with the aid of visible light. Herein, to fabricate a highly efficient photocatalyst for removal of organic pollution in water, a facile and swift sonochemical route employed for creation of the spindle shaped PbWO nanostructure with the aid of an environmentally friendly capping agent (maltose) for the first time. To optimize the efficiency, dimension and structure of lead tungstate, various effective factors such as time, dose of precursors, power of ultrasound waves and kind of capping agents were altered. The attributes of PbWO samples were examined with the aid of diverse identification techniques. The produced lead tungstate samples in role of visible-light photocatalyst were applied to remove organic pollution in water. The kinds of pollutants, dose and type of catalyst were examined as notable factors in the capability to eliminate contaminants. Very favorable catalytic yield and durability were demonstrated by spindle-shaped PbWO nanostructure (produced at power of 60 W for 10 min and with usage of maltose). Usage of ultrasonic irradiation could bring to improvement of catalytic yield of PbWO to 93%. Overall, the outcomes could introduce the spindle-shaped PbWO nanostructure as an efficient substance for eliminating water contamination under visible light.
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http://dx.doi.org/10.1016/j.ultsonch.2020.105420DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7803816PMC
April 2021

Synthesis and characterization of cotton-silver-graphene quantum dots (cotton/Ag/GQDs) nanocomposite as a new antibacterial nanopad.

Chemosphere 2021 Mar 11;267:129293. Epub 2020 Dec 11.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box. 87317-51167, Iran. Electronic address:

Appearance of antibiotic resistance in bacteria is a convoluted topic, particularly in treating pestiferous immunodeficiency correlated diseases. The main objective of the current research is to fabricate antibacterial pads by utilizing of graphene quantum dots (GQDs) as a linker, stabilizing, and reduction agent of in situ synthesized Ag nanoparticles (Ag NPs) on cotton pad. Five different antibacterial pads including cotton/Ag pad, cotton/GQDs/Ag pad, cotton/Ag/GQDs pad, cotton/GQDs/Ag/GQDs pad, and cotton/Ag/GQDs/Ag were fabricated and their antibacterial activities were compared to those of as-synthesized Ag/GQDs nanocomposites. The results indicate that cotton/GQDs/Ag pad shows a very promising minimum inhibitory concentration(MIC) of 0.09 and 0.01 against S. aureus and E. coli, respectively. Using GQDs as a linker (cotton/GQDs/Ag) and as a stabilizing agent (cotton/Ag/GQDs) significantly improves the antibacterial activity of Ag NPs.
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http://dx.doi.org/10.1016/j.chemosphere.2020.129293DOI Listing
March 2021

Transition metal selenides and diselenides: Hydrothermal fabrication, investigation of morphology, particle size and and their applications in photocatalyst.

Adv Colloid Interface Sci 2021 Jan 24;287:102321. Epub 2020 Nov 24.

Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box. 87317-51167, Kashan, Islamic Republic of Iran. Electronic address:

This review investigates hydrothermal synthesis of metal selenides and diselenides. Briefly, structures, applications and formation mechanisms are studied. The strategies for developing metal selenides, including NiSe, NiSe, NiSe, CdSe, FeSe, MnSe, CoSe, CuSe, CuSe, CuSe, CuSe and ZnSe are discussed. More of 50 hydrothermal methods used for the synthesis of metal selenides are discussed. As well as the investigation of the photocatalytic activities of these metal selenides are followed by different synthesis methods and strategies employed for the synthesis of them.
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http://dx.doi.org/10.1016/j.cis.2020.102321DOI Listing
January 2021

Chitosan-based nanoparticles against bacterial infections.

Carbohydr Polym 2021 Jan 20;251:117108. Epub 2020 Sep 20.

Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran. Electronic address:

Chitosan nanomaterials have become a hot topic in biomedicine due to exerting antimicrobial effects with interestingly high levels of biodegradability and biocompatibility without causing toxicity. Regarded as a potential means of wound dressing with antimicrobial activity, chitosan exhibits higher efficiency when it is functionally modified with other natural compounds, metallic antimicrobial particles and antibiotics. Mechanistically, the antibacterial effect of chitosan is mostly, associated with the death-proceeding leakage of intracellular content, induced by malfunction and altered permeability of the negatively charged cell membrane, on which chitosan is adsorbed. Moreover, chitosan nanoparticles (NPs) are endowed with favorable features of NPs (i.e., large surface-to-volume ratio, high functionalization possibilities and a greater capacity for drug loading), as well as that of their chitosan base, thereby possessing strengthened antibacterial potential. In addition, polycations target negatively charged bacterial membranes, so bacteria cells are more strongly affected by polycationic chitosan NPs than pure chitosan.
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http://dx.doi.org/10.1016/j.carbpol.2020.117108DOI Listing
January 2021

Effect of zirconia on improving NOx reduction efficiency of NdZrO nanostructure fabricated by a new, facile and green sonochemical approach.

Ultrason Sonochem 2021 Mar 23;71:105376. Epub 2020 Oct 23.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box. 87317-51167, Iran.

Here, we offer an easy and eco-friendly sonochemical pathway to fabricate NdZrO nanostructures and nanocomposites with the help of Morus nigra extract as a new kind of capping agent. For the first time, the performance of NdZrO-based ceramic nanostructure materials has been compared upon NO abatement. Diverse kinds of techniques have been employed to specify purity and check the attributes of the fabricated NdZrO-based nanostructurs by Morus nigra extract. Outcomes revealed the successful fabrication of NdZrO nanostructures and nanocomposites applying Morus nigra extract through sonochemical pathway. All nanostructured samples have been fabricated through ultrasonic probe with power of 60 W (18 KHz). Further, the fabricated NdZrO-based ceramic nanostructure materials can be applied as potential nanocatalysts with appropriate performance for propane-SCR-NO, since the conversion of NO to N for the best sample (NdZrO-ZrO nanocomposite) was 70%. In addition, in case of NdZrO-ZrO nanocomposite, the outlet quantity of CO as an unfavorable and unavoidable product was lower than the rest.
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http://dx.doi.org/10.1016/j.ultsonch.2020.105376DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7786589PMC
March 2021

Glioma cells eradication by photoexcitation of bioengineered molybdenum trioxide nanoparticles synthesized by wet chemical and microwave route: Dose dependent photosensitizer bioactivity.

Int J Pharm 2020 Dec 26;591:120021. Epub 2020 Oct 26.

Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of Iran. Electronic address:

Here, we surveyed the usage of MoO nanostructure in role of a photosensitizer to eradicate glioma cells. This is the first endeavor upon survey of usage of nanostructured MoO to treat glioma in vitro. Here, we offer a simple way for preparation of bioactive MoO nanostructure via two different routes; wet chemical and microwave. The influence of diverse experimental factors like various alcoholic solvents and presence of capping agent was investigated on the final properties of synthesized products. Dimension and morphology of inorganic molybdenum trioxide nanostructures checked with TEM, HRTEM and also SEM images. Moreover, the cytotoxicity effect of optimized MoO nanoparticles was investigated on T98 and A172 cell lines. Both T98 and A172 cell lines indicated dose-dependent manner in the presence of increasing concentration of MoO nanostructures, but T98 cells were less sensitive to MoO in comparison with A172. Anti-glioma role of MoO nanostructures excited with the aid of UVC illumination studied in vitro as well. By studying the UV exposure lonely, it is evident that UV effects on cell viability about 50% in both cell lines after 24 h. Interestingly, by combining nanostructured MoO with UVC illumination, decrement in the proliferation value could be remarkably occurred in comparison with controls. The outcomes denote that the photodynamic therapy with the help of nanostructured MoO may be beneficial to treat glioma.
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http://dx.doi.org/10.1016/j.ijpharm.2020.120021DOI Listing
December 2020

DyMnO/FeO nanocomposites: simple sol-gel auto-combustion technique and photocatalytic performance for water treatment.

Environ Sci Pollut Res Int 2021 Mar 27;28(9):11066-11076. Epub 2020 Oct 27.

Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box. 87317-51167, Kashan, Islamic Republic of Iran.

Recently, nanocomposite photocatalysts based on semiconductors have drawn consideration due to their suitable bandgap. Combination of tow of several semiconductors can slow down the electron-hole recombination. For this purpose, we have introduced DyMnO/FeO nanocomposite as a novel and efficient catalyst for water purification. For this regard, DyMnO/FeO nanocomposite has been fabricated by a simple and green sol-gel auto-combustion technique. The impact of calcination temperature, time, and types of fuel was investigated on morphology, structure, and purity of the products. The samples were identified by XRD, FTIR, FESEM, HRTEM, BET, and DRS. The bandgap was calculated by DRS to be 3.20 and 3.28 eV for FeO and DyMnO. Due to the appropriate bandgap, DyMnO/FeO degraded 80% of methylene blue under UV light. The future aspects of the DyMnO/FeO application can be applied in thermoelectric materials, solid fuel cells, electrochemical gas sensors, and electrochemical biosensors.
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http://dx.doi.org/10.1007/s11356-020-11324-8DOI Listing
March 2021

An eco-friendly and simple sol-gel autocombustion method for synthesis of copper hexaferrite nanostructures: characterization and photocatalytic activity for elimination of water contaminations.

Environ Sci Pollut Res Int 2021 Mar 25;28(9):10791-10803. Epub 2020 Oct 25.

Institute of Nanoscience and Nanotechnology, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of Iran.

In this work, copper hexaferrite (CuFeO) nanostructures are successfully synthesized by the sol-gel autocombustion route. Two natural reagents containing pomegranate and beetroot juices are used as green and eco-friendly fuels for synthesis of the nanostructures. The nanostructures are characterized by different techniques such as X-ray diffraction (XRD), energy-dispersive X-ray (EDX), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometry (VSM), and diffuse reflectance spectroscopy (DRS). The results show an appropriate amount of pomegranate juice as a fuel source creating a suitable route for synthesis of CuFeO nanostructures. Therefore, the nanostructures are applied for degradation of different water contaminants containing eosin, erythrosine, rhodamin B, and methyl violet dyes. The comparison of the results shows that the nanostructures are a good photocatalyst for degradation of erythrosine. Therefore, green CuFeO nanostructures can be a good candidate as UV light catalyst for removal of wastewater contaminations.
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http://dx.doi.org/10.1007/s11356-020-11165-5DOI Listing
March 2021

Sol-gel synthesis and characterization of CoO/CeO nanocomposites and its application for photocatalytic discoloration of organic dye from aqueous solutions.

Environ Sci Pollut Res Int 2021 Feb 6;28(6):7001-7015. Epub 2020 Oct 6.

Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Rep, Iran.

Herein, CoO/CeO nanocomposite was synthesized by the modified Pechini method. Citric, maleic, succinic, and trimsic acids were used as a stabilizer, and the variation affected the morphology and size of the synthesized nanocomposites. Subsequently, the formation of CoO/CeO nanocomposites was confirmed by various analyses. Furthermore, the particles were considered for size and morphology by SEM and HRTEM analyses, and the sample that used trimsic acid as the stabilizer was designated as the goal sample to continue the route. The optimum sample was used to investigate the photocatalytic properties of the synthesized nanocomposite. The UV-light photocatalyst test was performed in neutral, alkaline, and acidic states against two aqueous solutions containing color contamination of methylene blue and erythrosine B dyes. The results showed decolorization at 85% for methylene blue and 90% for erythrosine B over 120 min test time.
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http://dx.doi.org/10.1007/s11356-020-11040-3DOI Listing
February 2021

Mesopourous [email protected] nanocomposite: Green sonochemical synthesis using strawberry fruit extract as a capping agent, characterization and their application in sulfasalazine delivery and cytotoxicity.

J Hazard Mater 2020 12 11;400:123140. Epub 2020 Jun 11.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P.O. Box 87317-51167, Iran. Electronic address:

The present study introduces a simple, biocompatible and effective drug delivery system by using mesoporous nanocomposite-based platform. To achieve this goal, mesopourous [email protected] nanocomposite (mFSH) was synthesized by sonochemical process in presence of strawberry fruit extract as capping agent (mFSH-SW). The impact of various factors such as sonication time (5, 15, 30 and 45 min), capping agent (cherry (CH), strawberry (SW), malus domestica (MD), andean blackberry (AB)), pH (10, 11 and 12) and sonication power (30, 60 and 80 W) were investigated to reach optimum condition. To reach high efficiency of drug loading, mFSH was grafted with 3-aminopropyl triethoxysilane (APTES). Uniform, regular and spherical morphology of nanocomposite were specified by field emission scanning electron microscopy (FESEM), X-ray powder diffraction (XRD), vibrating sample magnetometer (VSM), high-resolution transmission electron microscopy (HRTEM), energy-dispersive x-ray spectroscopy (EDX), dynamic light scattering (DLS), nitrogen adsorption/desorption isotherm and Fourier-transform infrared spectroscopy (FT-IR) techniques. The mean pore size, surface area, and pore volume of mFSH-SW were 63.2 m g, 14.1 nm and 0.24 cm g, respectively. Sulfasalazine (SLN) loading and release were carried out by various products. The functionalized mFSH-SW showed high adsorption capacity (approximately 59.1 %) for SLN that possesses amino functional groups. The results showed that 100 % of SLN-loaded nanocomposite could be released after 36 h at intestinal conditions (pH = 6.8). In addition, in-vitro and in-vivo toxicity investigations of product were performed with apoptosis/necrosis, XTT and pathology assay, respectively. All in all, unique properties of the nanocomposite including low toxicity, high drug loading, slow release and biodegradable showed that it can be used in biomedical sciences.
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http://dx.doi.org/10.1016/j.jhazmat.2020.123140DOI Listing
December 2020

Toxic effects of FeWO nanoparticles towards microalga Dunaliella salina: Sonochemical synthesis nanoparticles and investigate its impact on the growth.

Chemosphere 2020 Nov 8;258:127348. Epub 2020 Jun 8.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P.O. Box 87317-51167, Iran. Electronic address:

In this work, FeWO nanoparticles were synthesized by the ultrasound-assisted precipitation method. Various conditions were applied, including the change of the pH factor and reaction time for the synthesis of nanoparticles. After confirming the synthesis of the nanoparticles by various analyzes and evaluating their size and morphology, one of the conditions for the synthesis of the nanoparticles were selected as the optimum condition. The samples were added to the growth medium of a well-known microalga, Dunaliella salina at three concentrations of 20, 40 and 80 ppm to evaluate the effect of nanoparticles on biological systems. After 10 days different biological parameters were measured and compared with those of the control sample. According to the results, at concentration of 20 ppm the number of cells, the amount of chlorophyll a, and b, and biomass increased compared to the control samples. The Carotenoid level was higher in the treatment with 40 ppm of nanoparticles than that in the control samples. Compared to the control sample, the level of lipid peroxidation and the ratio of carbohydrate to amide II showed to be higher under 80 ppm treatment of particles. According to HCA analysis, both the evaluated parameters and concentrations of nanoparticles were divided into two general categories. Overall results showed that the effect of FeWO nanoparticles on microalgae could be a dose-dependent phenomenon, so that the addition of 20 ppm nanoparticles in the culture media helped the growth and the physiological status of algae. On the other hand, the application of a higher concentration of nanoparticles negatively affects algal biology. The results showed that the algae could be successfully used to precise screen of various nanoparticles in terms of safety especially in aquatic environments and also biotechnological applications.
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http://dx.doi.org/10.1016/j.chemosphere.2020.127348DOI Listing
November 2020

Passivation Mechanism Exploiting Surface Dipoles Affords High-Performance Perovskite Solar Cells.

J Am Chem Soc 2020 Jul 22;142(26):11428-11433. Epub 2020 May 22.

Institute of Chemical Sciences and Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne CH-1015, Switzerland.

The employment of 2D perovskites is a promising approach to tackling the stability and voltage issues inherent in perovskite solar cells. It remains unclear, however, whether other perovskites with different dimensionalities have the same effect on efficiency and stability. Here, we report the use of quasi-3D azetidinium lead iodide (AzPbI) as a secondary layer on top of the primary 3D perovskite film that results in significant improvements in the photovoltaic parameters. Remarkably, the utilization of AzPbI leads to a new passivation mechanism due to the presence of surface dipoles resulting in a power conversion efficiency (PCE) of 22.4%. The open-circuit voltage obtained is as high as 1.18 V, which is among the highest reported to date for single junction perovskite solar cells, corresponding to a voltage deficit of 0.37 V for a band gap of 1.55 eV.
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http://dx.doi.org/10.1021/jacs.0c01704DOI Listing
July 2020

Green synthesis and characterization of DyMnO-ZnO ceramic nanocomposites for the electrochemical ultratrace detection of atenolol.

Mater Sci Eng C Mater Biol Appl 2020 Jun 14;111:110854. Epub 2020 Mar 14.

Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, P.O. Box 87317-51167, Islamic Republic of Iran. Electronic address:

The present study is a first report about magnetic, optical and electrical as well as drug sensing properties of DyMnO-ZnO green-nanocomposites that are synthesized by Pechini modified method. Three natural compounds containing Vitis vinifera, Hibiscus sabdariffa and rhus juices are used as green and eco-friendly reagents for synthesis of the nanostructures. The nanostructures are characterized by various techniques containing Fourier transform infrared spectra (FT-IR), X-ray diffraction (XRD), energy dispersive X-ray (EDX), field emission scanning electron microscopes (FESEM), high resolution transmission electron microscopy (HR-TEM), vibrating sample magnetometer (VSM) and diffuse reflectance spectroscopy (DRS). The calcination temperature, type of chelating agent and pH are optimized to achieve the best structural and smallest crystallite sizes of the systems via an eco-friendly approach. The studies show that the Vitis vinifera juice creates the best homogeneous sphere-like nanostructures. Therefore, the samples that are synthesized by Vitis vinifera juice are used for fabrication of a carbon paste electrode modified with DyMnO-ZnO nanocomposites (DMZN/CPE). The nanostructured modified electrode exhibits an excellent electrocatalytic effect for determination of atenolol (ATN) using voltammetry techniques. The results reveal that the DyMnO-ZnO green-nanocomposites have potential applications as a sensitive material in the drug analysis in biological samples.
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http://dx.doi.org/10.1016/j.msec.2020.110854DOI Listing
June 2020

Facile fabrication of silver iodide/graphitic carbon nitride nanocomposites by notable photo-catalytic performance through sunlight and antimicrobial activity.

J Hazard Mater 2020 05 16;389:122079. Epub 2020 Jan 16.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, Islamic Republic of Iran. Electronic address:

Silver iodide/graphitic carbon nitride nanocomposites have been successfully fabricated through sonication-assisted deposition-precipitation route at room temperature and hydrothermal method. Varied mass ratios and preparation processes can modify the structure, purity, shape, and scale of specimens. The purity of the product was confirmed by Energy Dispersive X-Ray Spectroscopy (EDS) and X-ray crystallography. The morphology and size of specimens could be observed with transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM). The bandgap was evaluated around 2.82 eV for pure g-CN. The bandgap has reduced to 2.70 eV by increasing the quantity of silver iodide in the nanocomposites. The photocatalytic activity of AgI/CN has been studied over the destruction of rhodamine B (RhB) and methyl orange (MO) through visible radiation due to their suitable bandgap. The as-prepared AgI/CN nanocomposites photocatalyst revealed better photocatalytic behavior than the genuine AgI and CN which ascribed to synergic impacts at the interconnection of CN and AgI. Furthermore, these nanocomposites have great potential for being a great antibacterial agent.
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http://dx.doi.org/10.1016/j.jhazmat.2020.122079DOI Listing
May 2020

Electro-spinning of cellulose acetate nanofibers/Fe/carbon dot as photoluminescence sensor for mercury (II) and lead (II) ions.

Carbohydr Polym 2020 Feb 3;229:115428. Epub 2019 Oct 3.

Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Iran. Electronic address:

The aim of this work is synthesis of magnetic and photoluminescence (PL) nano-fibers for detection of mercury (II) and lead (II) ions that are toxic and their detection are necessary. Prepared nanoparticles are controllable by external magnetic field, so their threat is much lesser than non-magnetic material. Firstly, iron nanoparticles were achieved with ball milling procedure and cellulose acetate (CA) nano-fibers were prepared by electro spinning procedure. Photoluminescence carbon dot were synthesized with citric acid (or lemon extract as green precursor). Fe nanoparticles were added to polymeric fibers and eventually, carbon dots were coated on the fibers by hydrothermal method. Evidence for carbon dot existence on the nanofibers is photo luminescence (blue color) under ultra-violet irradiation; results show reduction in PL intensity by enhancing of toxic heavy metal ions. A novel magnetic nano-fibers as a rapid test sensor for detecting of mercury(II) and lead(II) is presented.
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http://dx.doi.org/10.1016/j.carbpol.2019.115428DOI Listing
February 2020

Ultrasound-accelerated synthesis of uniform SrMnO nanoparticles as water-oxidizing catalysts for water splitting systems.

Ultrason Sonochem 2020 Apr 28;62:104899. Epub 2019 Nov 28.

Institute of Research and Development, Duy Tan University, Da Nang 550000, Viet Nam. Electronic address:

One of the major issue in the 21st century is the humans request to green energy. The best form of green, sustainable and safe energy is hydrogen source due to its ecological and economical aspects. Herein, In order to obtain a highly water-oxidizing catalysts for water splitting systems, the sonochemical procedure applied for fabrication of practical SrMnO nanoparticles. Also, the influence of various green capping agents (fruit juices and vegetable wastes) was studied on the formation of uniform particles. In the present work ultrasonic probe with 60 W/cm intensity and 18 kHz frequency was used for sample synthesis. Further, catalytic behavior of these nanomaterials investigated in water splitting reaction for O evolution by modifying the operational variables. The best catalytic behavior observed by those nanoparticles that indicated the smallest size and the most uniform morphology (Max amount of TON = 7.556). By utilizing the ultrasonic irradiation, the catalytic behavior of SrMnO nanoparticles improved (TON (ultrasonic bath) = 8.430, TON (ultrasonic probe) = 11.315). Therefore, nano-SrMnO was introduced as an efficient and novel nanocatalyst for O evolution reaction.
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http://dx.doi.org/10.1016/j.ultsonch.2019.104899DOI Listing
April 2020

CdSnO-graphene nanocomposites: Ultrasonic synthesis using glucose as capping agent and characterization for electrochemical hydrogen storage.

Ultrason Sonochem 2020 Mar 24;61:104840. Epub 2019 Oct 24.

Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of Iran. Electronic address:

Nanoscale cadmium stannate (CdSnO) structures were productively synthesized via a facile and rapid sonochemical route using an eco-friendly capping agent of glucose. In order to optimize the size and structure of products, the various effective factors were inquired such as ultrasound waves, calcination temperature and solvent. The all samples were synthesized under ultrasonic probe for 30 min and different power (frequency) of 80 (24 KHz), 60 (18 KHz) and 40 W (12 KHz). The properties and characteristics of as-fabricated samples were examined by proficient techniques to identification the purity, structure, shape, optical, electrical and surface features. The ability of CdSnO nanostructures and representative graphene based nanocomposites as potential hydrogen storage materials was considered by electrochemical methods. According to the obtained results, the CdSnO/graphene nanocomposites demonstrated higher hydrogen storage capacity than pristine CdSnO nanostructures.
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http://dx.doi.org/10.1016/j.ultsonch.2019.104840DOI Listing
March 2020

Effective removal of organic pollution by using sonochemical prepared LaFeO perovskite under visible light.

Ultrason Sonochem 2020 Mar 28;61:104848. Epub 2019 Oct 28.

Institute of Research and Development, Duy Tan University, Da Nang 550000, Viet Nam. Electronic address:

In the present work, LaFeO perovskite was prepared via ultrasonic probe with power of 60 W and frequency of 18 KHz. LaFeO nanorods were formed when sonication time was 20 min. In this research, green materials including corn, starch, and rice were used to control the size, morphology, and purity of final products. As-prepared LaFeO nanostructures were used to purify water containing organic contaminants. LaFeO nanostructures prepared by using corn, starch, and rice showed higher photocatalytic activity compare to LaFeO nanostructures without natural capping agents. Using corn increased degradation efficiency by 65% under visible light. XRD results show that FeO appeared as an impurity when starch was used to prepare LaFeO nanostructures. This impurity significantly boosts the degradation efficiency under UV light. FeO under UV light act as co-absorbent and boost efficiency by 43%. LaFeO nanostructures were characterized by XRD, EDX, SEM, CV, BET, TEM, DRS and FT-IR.
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http://dx.doi.org/10.1016/j.ultsonch.2019.104848DOI Listing
March 2020

Sonochemical synthesis, characterization and application of PrVO nanostructures as an effective photocatalyst for discoloration of organic dye contaminants in wastewater.

Ultrason Sonochem 2020 Mar 9;61:104822. Epub 2019 Oct 9.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box 87317-51167, Iran. Electronic address:

In the current research, various conventional chemical preparation methods without ultrasound aid (precipitation, microwave, and hydrothermal) were compared with sonochemical procedure and were performed for providing of PrVO nanostructures using Schiff-base ligands. The small size products with monodisperse particles (~39 nm) optimized by sonochemical fabrication method and using H acacpn ligand via ultrasonic probe with power of 60 W and frequency of 18 KHz. The produced PrVO nanostructures applied for degradation of diverse organic dyes through the photocatalytic process. Dye types, pH adjusting of dye, dosage of catalyst, synthesis method of nanoparticles and light source as impressive factors inquired for dye removal ability. The outcomes presented the removal efficiency of Eriochorom Black T in optimal conditions of pH = 11 and the catalysts amounts of PrVO were adjusted to be 0.05 g. The PrVO photocatalyst shows high removal efficiency (ca 86.92 and 89.61%) after 90 min of operation under UV light. The best-obtained framework confirmed the basic study to compare different method in order to acquire suitable catalyst materials. The simple, fast and economic strategy for synthesis PrVO with high photodegradation efficiency is sonochemical method against other ways, and it could be extended to the most efficient catalyst materials for water treatment. Consequently, the PrVO may suggestion a hopeful avenue for designing the novel generation, low-cost and outstanding potential photocatalyst materials for water treatment.
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http://dx.doi.org/10.1016/j.ultsonch.2019.104822DOI Listing
March 2020

BaMnO nanostructures: Simple ultrasonic fabrication and novel catalytic agent toward oxygen evolution of water splitting reaction.

Ultrason Sonochem 2020 Mar 12;61:104829. Epub 2019 Oct 12.

Institute of Research and Development, Duy Tan University, Da Nang 550000, Viet Nam. Electronic address:

In the current paper, the main aim is to fabricate the BaMnO nanostructures via the sonochemical route. The various factor, including precursors, reaction time and power of sonication can affect the shape, size, and purity of the samples. We utilized X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray energy dispersive spectroscopy (EDS) to characterize the BaMnO nanostructures. The optical property of BaMnO nanostructures was explored by Ultraviolet-visible spectroscopy (UV-vis) and the energy gap was suitable for catalytic activity (about 2.75 eV). Changing the precursor can affect the size, nanoparticle shape, architectures, and uniformity of the samples. We employed the BaMnO nanostructures for O evolution reaction as catalysts. It can observe that increasing the homogeneity of the catalysts can increase the efficiency of the Oxygen evolution reaction. The maximum amount of the O evolution and the highest TOF and TON are related to nanoplate disc using barium salicylate as a precursor of barium. As a result, we can nominate the BaMnO nanostructures as an effective and novel catalyst for water-splitting reaction.
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http://dx.doi.org/10.1016/j.ultsonch.2019.104829DOI Listing
March 2020

Control sonochemical parameter to prepare pure ZnFeO nanostructures and study their photocatalytic activity.

Ultrason Sonochem 2019 Nov 29;58:104619. Epub 2019 May 29.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box. 87317-51167, Islamic Republic of Iran. Electronic address:

ZnFeO nanostructure was prepared as a ferrite material by using a simple sonochemistry method. The effect of different parameters such as sonication time and power were studied. By increasing sonication power and time more Fe ions reduced to Fe. This happens because H and OH radicals produced under sonication could act as a reduction agent. Therefore by increasing power and sonication time more Fe ions reduced. Pure ZnFeO nanostructure was formed when sonication time and power were 30 min and 40 W. Surface area for pure ZnFeO nanostructure was 64 m.g. Afterward, ZnFeO nanostructures were applied to treat water containing different pollutants. As-prepared nanostructures degrade 60.8, 77.9, 55.2 and 44.0% of Acid Violet 7, Acid Blue 92, Acid Red 14, and Methyl Orange under visible light during 180 min irradiation. In addition, 94.5, 84.2, and 43.0% of AV7, PhR, and Ery were degraded under UV light during 120 min irradiation. The as-synthesized ZnFeO nanostructure was characterized through the SEM, EDX, TEM, CV, DRS, BET, VSM, and XRD.
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http://dx.doi.org/10.1016/j.ultsonch.2019.104619DOI Listing
November 2019

Sonochemical synthesis of PrMoO nanostructures as an effective photocatalyst for waste-water treatment.

Ultrason Sonochem 2019 Nov 25;58:104687. Epub 2019 Jul 25.

Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam. Electronic address:

Synthesis of pure PrMoO nanoparticles was the aim of the present work, which was prepared by sonochemical method which is a controllable rout on size, purity, and morphology of products. The experiments were carried out under a probe as sonication source, and its power was adjusted in 30 W (9 kHz), 50 W (15 kHz), and 80 W (24 kHz) for different samples. The optimum product with the smallest size and highest purity was synthesized by changing time, power of sonication, solvent and capping agent. Besides, the formation of various phases of praseodymium molybdate was investigated in different experimental conditions that proved the presence of ammonia, sonication and calcination are necessary factors for the preparation of pure PrMoO nanoparticles. Products were characterized by various analyses such as SEM, XRD, TEM, FT-IR, DRS, and EDS. Furthermore, the photocatalytic activity of PrMoO nanoparticles under UV irradiation was studied by photodegradation of methylene blue and acid red 92 as organic pollutants. The most active photocatalytic agent was determined superoxide anion radicals and kinetics model of photocatalytic reaction was considered as pseudo-first order.
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http://dx.doi.org/10.1016/j.ultsonch.2019.104687DOI Listing
November 2019

Sonochemical-assisted route for synthesis of spherical shaped holmium vanadate nanocatalyst for polluted waste water treatment.

Ultrason Sonochem 2019 Nov 13;58:104686. Epub 2019 Jul 13.

Institute of Nano Science and Nano Technology, University of Kashan, P. O. Box 87317-51167, Kashan, Islamic Republic of Iran. Electronic address:

Solar photocatalytic process has been shown to be an energy effective and eco-friendly degradation of unwanted pollutants present in the industrial wastewater. The present study introduces the preparation and characterization of novel holmium vanadate (HoVO nanostructures that fully used in the photodegradation efficiency of anionic and cationic organic pollutants. HoVO synthesized via a sonochemical-assisted route and triethylenetetramine (TETA) was used as a capping and precipitation agent. The experiments were carried out under a probe as sonication source, and its power was adjusted in 30 W (9 kHz), 50 W (15 kHz) and 80 W (24 kHz) for different samples. The obtained nanostructures were characterized by surface analytical and spectral techniques includes XRD, FT-IR, SEM, TEM and UV-visible spectra measurements. The HR-SEM images reveal that HoVO exists as a spindle-shape with spherical morphology together. HR-TEM images reveal that prepared catalyst has a spherical structure with uniform particle size. The results outline 67.6% elimination of methyl violet dye within 90 min under UV light in the presence of the optimal nano-sized formulation of 24.5 nm size. The prepared photocatalyst possesses high stability and reusability without appreciable loss of catalytic activity up to three runs.
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http://dx.doi.org/10.1016/j.ultsonch.2019.104686DOI Listing
November 2019
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