14,778 results match your criteria separation enhanced


Ultrasonic assisted rapid preparation of superhydrophobic stainless steel surface and its application in oil/water separation.

Ultrason Sonochem 2021 Nov 26;81:105848. Epub 2021 Nov 26.

College of Mechanical and Electrical Engineering, China University of Petroleum (East China), Qingdao 266580, PR China.

The preparation of superhydrophobic (SH) surface on stainless steel by chemical etching method is challenging due to the good corrosion resistance of the material. In this work, SH surface with water contact angle (WCA) as high as 163.21° was accomplished on 304 stainless steel surface by a rapid ultrasonic-assisted chemical etching method within 7 min and a low-cost fluorine-free modification treatment. Read More

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November 2021

The effect of stenosis rate and Reynolds number on local flow characteristics and plaque formation around the atherosclerotic stenosis.

Acta Bioeng Biomech 2021 ;23(1):135-147

Institute of Biomechanics, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, China.

Purpose: Atherosclerosis causes plaque to build-up in arteries. Effect of the specific local hemodynamic environment around an atherosclerotic plaque on the thrombosis formation does not remain quite clear but is believed to be crucial. The aim of this study is to uncover the flow effects on plaques formation. Read More

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January 2021

Cyclodextrin-modified graphene quantum dots as a novel additive for the selective separation of bioactive compounds by capillary electrophoresis.

Mikrochim Acta 2021 11 30;188(12):440. Epub 2021 Nov 30.

Department of Analytical Chemistry and Food Technology, University of Castilla-La Mancha, Avenue Camilo José Cela s/n 13004, Ciudad Real, Spain.

Highly reliable separation and determination of various biologically active compounds were achieved using capillary electrophoresis (CE) based on β-cyclodextrin-functionalized graphene quantum dots (βcd-GQDs) as the background electrolyte additive. βcd-GQDs improve the separation efficiency between peaks of all analytes. No addition of surfactants or organic solvents was needed in the running buffer containing βcd-GQDs. Read More

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November 2021

Indium nanoparticle-based surface enhanced fluorescence from deep ultraviolet to near-infrared: A theoretical study.

Spectrochim Acta A Mol Biomol Spectrosc 2021 Nov 14:120603. Epub 2021 Nov 14.

Department of Physics, Indian Institute of Technology Patna, Bihar 801103, India. Electronic address:

Herein, for the first time, we report a theoretical investigation on Indium nanoparticle-based surface enhanced fluorescence (SEF) from deep ultraviolet (UV) to near-infrared (NIR). In the beginning, the far- and near-field plasmonic properties of the Indium nanospheres of different sizes are studied to extract the wavelengths of lower and higher-order localized surface plasmon modes and the corresponding local electric field enhancement (EFE) values. Later, the dependence of the SEF enhancement with the separation between the fluorophore and nanoparticle (d), fluorescence, and excitation wavelengths is studied systematically. Read More

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November 2021

A novel Sm doped CrO sesquioxide-decorated MWCNTs heterostructured Fenton-like with sonophotocatalytic activities under visible light irradiation.

J Hazard Mater 2021 Nov 21:127812. Epub 2021 Nov 21.

Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; Faculty of Science and Technology, School of Applied Physics, University Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia; School of Chemistry, Shoolini University, Solan, Himachal Pradesh, 173229, India; Department of Biological and Chemical Engineering, Aarhus University, Nørrebrogade 44, 8000 Aarhus C, Denmark.

Novel Sm doped CrO decorated MWCNTs nanocomposite photocatalyst was successfully prepared by a facile hydrothermal method for metoprolol (MET) degradation. A heterogeneous photo -Fenton like system was formed with the addition of HO for ultrasonic irradiation (US), visible light irradiation (Vis) and dual irradiation (US/Vis) systems. The intrinsic characteristics of Sm doped CrO decorated MWCNTs nanocomposite was comprehensively performed using state-of-art characterization tools. Read More

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November 2021

High positively charged FeO nanocomposites for efficient and recyclable demulsification of hexadecane-water micro-emulsion.

Chemosphere 2021 Nov 26:133050. Epub 2021 Nov 26.

College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, 830054, China; Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials, Xinjiang Normal University, Urumqi, 830054, China. Electronic address:

Oily wastewater not only causes major environmental issues, but also threatens human health. Magnetic nanoparticles (MNPs) are an attractively alternative commercial demulsifiers for their recyclability and high surface area. The wettability and surface charge of magnetic materials are significant factors in oily wastewater treatment. Read More

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November 2021

Magnetically Controllable Flowerlike, Polyhedral Ag-Cu-CoO for Surface-Enhanced Raman Scattering.

ACS Appl Mater Interfaces 2021 Nov 29. Epub 2021 Nov 29.

Department of Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, New York 14260, United States.

Syntheses of Cu-, Ag-, and Ag-Cu-CoO nanomaterials are of interest for a wide range of applications including electrochemistry, thermal catalysis, energy storage, and electronics. However, CoO-based nanomaterials have not been explored for surface-enhanced Raman scattering (SERS). Here, we present Cu-, Ag-, and Ag-Cu-CoO nanomaterials of a hierarchical flower shape comprising two separate phases: a pure Cu or Ag core and multiple CoO branches, in which the optical properties of the core and the magnetic properties of the branches are integrated. Read More

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November 2021

Stretch-Enhanced Anisotropic Wetting on Transparent Elastomer Film for Controlled Liquid Transport.

ACS Nano 2021 Nov 29. Epub 2021 Nov 29.

Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China.

Direction-controlled wetting surfaces, special for lubricating oil infused anisotropic surfaces, have attracted great research interest in directional liquid collection, expelling, transfer, and separation. Nonetheless, there are still existing difficulties in achieving directional and continuous liquid transport. Herein, we present a strategy to achieve directional liquid transport on transparent lubricating oil infused elastomer film with V-shaped prisms microarray (VPM). Read More

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November 2021

Constructing highly porous carbon materials from porous organic polymers for superior CO adsorption and separation.

J Colloid Interface Sci 2021 Nov 20. Epub 2021 Nov 20.

College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China. Electronic address:

The increase in atmospheric carbon dioxide (CO) concentration has led to numerous problems related to our living environment, seeking an efficient carbon capture and storage (CCS) strategy associated with low energy consumption and expenditures is highly desirable. Here, we demonstrate a facile approach to synthesize a series of highly porous carbon materials derived from porous organic polymers synthesized from three low-cost isomers of triphenyl using chemical activation with KOH at different temperatures. Compared with the precursor porous organic polymers, the porosity of the prepared porous carbon materials is significantly enhanced with surface areas as high as 3367 m g and pore volumes up to 1. Read More

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November 2021

Dual plasmonic Au and TiN cocatalysts to boost photocatalytic hydrogen evolution.

Chemosphere 2021 Nov 25:132987. Epub 2021 Nov 25.

School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China. Electronic address:

Employing a suitable cocatalyst is very important to improve photocatalytic H evolution activity. Herein, two plasmonic cocatalysts, Au nanoparticles and TiN nanoparticles were in-situ coupled over the g-CN nanotube to form a ternary 0D/0D/1D Au/TiN/g-CN composite via a successive thermal polycondensation and chemical reduction method. The g-CN nanotube acted as a support for the growth of Au and TiN nanoparticles, leading to intimate contact between g-CN nanotube with Au nanoparticles and TiN nanoparticles. Read More

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November 2021

Boosting the photocatalytic hydrogen production performance of graphitic carbon nitride nanosheets by tailoring the cyano groups.

J Colloid Interface Sci 2021 Nov 20. Epub 2021 Nov 20.

Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. Electronic address:

Graphitic carbon nitride (g-CN) is a promising visible light responsive photocatalyst for solar hydrogen production. However, pristine g-CN suffers from severe charge recombination, resulting in a poor photocatalytic activity. Herein, a facile KOH-assisted sealed heating process is designed to tailor the electronic structure of g-CN, leading to a significantly enhanced and stable photocatalytic hydrogen production rate of 225. Read More

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November 2021

High piezocatalytic capability in CuS/MoS nanocomposites using mechanical energy for degrading pollutants.

J Colloid Interface Sci 2021 Nov 17. Epub 2021 Nov 17.

School of Physics and Technology, Key Laboratory of Nuclear Solid State Physics Hubei Province, Wuhan University, Wuhan 430072, China. Electronic address:

Piezocatalysis, driven by mechanical energy and piezoelectric effect, is of great potential in addressing the environmental issues. In this work, a piezoelectric catalyst was fabricated by growing few-layer MoS nanosheets onto CuS, for the piezocatalytic degradation of Rhodamine B (RhB), methylene blue (MB) and hexavalent chromium (Cr (VI)). The excellent removal efficiency of Cr (VI) and RhB can be reached 100% within 180 s, through the piezocatalysis of CuS/MoS-0. Read More

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November 2021

Acoustic Angiography: Superharmonic Contrast-Enhanced Ultrasound Imaging for Noninvasive Visualization of Microvasculature.

Methods Mol Biol 2022 ;2393:641-655

Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, USA.

Acoustic angiography is a contrast-enhanced ultrasound technique that relies on superharmonic imaging to form high-resolution, three-dimensional maps of the microvasculature. In order to obtain signal separation between tissue and contrast, acoustic angiography has been performed with dual-frequency transducers with nonoverlapping bandwidths. This enables a high contrast-to-tissue ratio, and the choice of a high frequency receiving element provides high resolution. Read More

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January 2022

Engineering a NiAl-LDH/CoS S-Scheme heterojunction for enhanced photocatalytic hydrogen evolution.

J Colloid Interface Sci 2021 Nov 17. Epub 2021 Nov 17.

School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China. Electronic address:

The use of semiconductors to construct heterojunctions to suppress the rapid recombination of photogenerated charges and holes is considered to be an effective way to improve the efficiency of photocatalytic hydrogen evolution. Herein, cobalt sulfide (CoS) nanoparticles are cultivated in situ in the folds of three-dimensional flower-like nickel-aluminium layered double hydroxides (NiAl-LDHs) using a facile solvothermal method. The hydrogen production rate of the binary CoS/NiAl-LDH heterojunction reaches 3678. Read More

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November 2021

Peroxymonosulfate Activation by BiWO/BiOCl Heterojunction Nanocomposites under Visible Light for Bisphenol A Degradation.

Nanomaterials (Basel) 2021 Nov 20;11(11). Epub 2021 Nov 20.

State Key Laboratory of Coal Mine Disaster Dynamics and Control, College of Environment and Ecology, Chongqing University, Chongqing 400044, China.

The combination of peroxymonosulfate (PMS) activation and photocatalysis has proven to be effective for organic contaminants treatment. However, the construction of an efficient catalytic material is an important challenge. Herein, novel BiWO/BiOCl heterojunction nanocomposites were successfully designed and fabricated using a facile and effective strategy for bisphenol A (BPA) photodegradation with PMS activation. Read More

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November 2021

CdInS/In(OH)/NiCr-LDH Multi-Interface Heterostructure Photocatalyst for Enhanced Photocatalytic H Evolution and Cr(VI) Reduction.

Nanomaterials (Basel) 2021 Nov 19;11(11). Epub 2021 Nov 19.

Institute of Optoelectronic Materials and Devices, College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China.

The development of highly active and stable photocatalysts, an effective way to remediate environment pollution and alleviate energy shortages, remains a challenging issue. In this work, a CdInS/In(OH) nanocomposite was deposited in-situ on NiCr-LDH nanosheets by a simple hydrothermal method, and the obtained CdInS/In(OH)/NiCr-LDH heterostructure photocatalysts with multiple intimate-contact interfaces exhibited better photocatalytic activity. The photocatalytic H evolution rate of CdInS/In(OH)/NiCr-LDH increased to 10. Read More

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November 2021

Synthesis and Enhanced Light Photocatalytic Activity of Modulating Band BiOBrI Nanosheets.

Nanomaterials (Basel) 2021 Nov 2;11(11). Epub 2021 Nov 2.

National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001, China.

The photocatalysis technique has been proven to be a promising method to solve environmental pollution in situations of energy shortage, and has been intensively investigated in the field of pollutant degradation. In this work, a band structure-controlled solid solution of BiOBrI (x = 0.00, 0. Read More

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November 2021

Influence of Stabilizer on the Development of Luteolin Nanosuspension for Cutaneous Delivery: An In Vitro and In Vivo Evaluation.

Pharmaceutics 2021 Oct 30;13(11). Epub 2021 Oct 30.

Department of Pharmacy Practice, College of Pharmacy, Al Maarefa University, Ad Diriyah 13713, Saudi Arabia.

Luteolin is a natural drug used as an antioxidant and anti-inflammatory, but unfortunately, it possesses low water solubility, which hinders its delivery via the skin. The main objective of this study was to prepare a luteolin-loaded nanosuspension by the antisolvent precipitation/sonication technique and study the effects of four stabilizers (two nonionic stabilizers, Pluronic F127 and Tween 80, and two polymeric stabilizers, HPMC and alginate) on the physicochemical properties of the prepared formulations. The selected formulations were incorporated into a gel base to evaluate their skin permeability and anti-inflammatory efficacy. Read More

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October 2021

Racemate Resolution of Alanine and Leucine on Homochiral Quartz, and Its Alteration by Strong Radiation Damage.

Life (Basel) 2021 Nov 11;11(11). Epub 2021 Nov 11.

Fachbereich für Geographie und Geologie, Universität Salzburg, Hellbrunnerstraße 34, 5020 Salzburg, Austria.

Homochiral proteins orchestrate biological functions throughout all domains of life, but the origin of the uniform l-stereochemistry of amino acids remains unknown. Here, we describe enantioselective adsorption experiments of racemic alanine and leucine onto homochiral - and -quartz as a possible mechanism for the abiotic emergence of biological homochirality. Substantial racemate resolution with enantiomeric excesses of up to 55% are demonstrated to potentially occur in interstitial pores, along grain boundaries or small fractures in local quartz-bearing environments. Read More

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November 2021

Mitigating Silica Fouling and Improving PPCP Removal by Modified NF90 Using In Situ Radical Graft Polymerization.

Membranes (Basel) 2021 Nov 22;11(11). Epub 2021 Nov 22.

Department of Safety, Health and Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 824, Taiwan.

This study in-situ modified a commercial nanofiltration membrane, NF90, through the concentration-polymerization-enhanced radical graft polarization method by applying two agents of 3-sulfopropyl methacrylate potassium salt (SPM) and 2-hydroxyethyl methacrylate (HEMA) with different dosages. Surface characterization revealed that the modified membranes became rougher and more hydrophilic compared with the pristine membrane. The modified membranes exhibited considerably enhanced separation performance with 5. Read More

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November 2021

Organo-Functionalization: An Effective Method in Enhancing the Separation and Antifouling Performance of Thin-Film Nanocomposite Membranes by Improving the Uniform Dispersion of Palygorskite Nanoparticles.

Membranes (Basel) 2021 Nov 19;11(11). Epub 2021 Nov 19.

School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China.

Recently, palygorskite (Pal) has become a promising new membrane additive in flux enhancement and fouling reduction, which is an environmentally friendly nanoclay material under the 2:1 layer composition with 1D tubular structure. However, the aggregation of Pal due to the intermolecular forces is still an obstacle to be solved in improving membrane performance. Herein, Pal nanoparticles were chemically modified by KH550 to weaken the aggregation and improve the dispersibility, and then incorporated into the organic phase to prepare thin-film nanocomposite (TFN) membranes. Read More

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November 2021

Differences in Cadmium Accumulation, Detoxification and Antioxidant Defenses between Contrasting Maize Cultivars Implicate a Role of Superoxide Dismutase in Cd Tolerance.

Antioxidants (Basel) 2021 Nov 15;10(11). Epub 2021 Nov 15.

Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt.

Cadmium (Cd), a readily absorbed and translocated toxic heavy metal, inhibits plant growth, interrupts metabolic homeostasis and induces oxidative damage. Responses towards Cd-stress differ among plant cultivars, and the complex integrated relationships between Cd accumulation, detoxification mechanisms and antioxidant defenses still need to be unraveled. To this end, 12 Egyptian maize cultivars were grown under Cd-stress to test their Cd-stress tolerance. Read More

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November 2021

Revealing Topological Barriers against Knot Untying in Thermal and Mechanical Protein Unfolding by Molecular Dynamics Simulations.

Biomolecules 2021 Nov 13;11(11). Epub 2021 Nov 13.

Key Laboratory of Marine Environment and Ecology, Institute of Coastal Environmental Pollution Control, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China.

The knot is one of the most remarkable topological features identified in an increasing number of proteins with important functions. However, little is known about how the knot is formed during protein folding, and untied or maintained in protein unfolding. By means of all-atom molecular dynamics simulation, here we employ methyltransferase YbeA as the knotted protein model to analyze changes of the knotted conformation coupled with protein unfolding under thermal and mechanical denaturing conditions. Read More

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November 2021

Photo- and thermo-catalytic mechanisms for elemental mercury removal by Ce doped commercial selective catalytic reduction catalyst (VO/TiO).

Chemosphere 2022 Jan 24;287(Pt 3):132336. Epub 2021 Sep 24.

State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan, 430074, China. Electronic address:

The elemental mercury was catalytically removed by VO/TiO and Ce doped VO/TiO catalysts under the UV irradiation at 30-160 °C to determine whether the catalysts could simultaneously have both thermo- and photo-catalytic activities. The physicochemical properties of catalysts were characterized by XRD, SEM, EDX, BET, XPS, UV-visible, PER and EIS. The experimental results demonstrated that VO/TiO and Ce-doped catalysts possessed both thermo- and photo-catalytic reactivities. Read More

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January 2022

Accelerated charge transfer in well-designed S-scheme [email protected]/Boron carbon nitride heterostructures for high performance tetracycline removal and selective photo-reduction of CO greenhouse gas into CH fuel.

Chemosphere 2022 Jan 21;287(Pt 3):132301. Epub 2021 Sep 21.

College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Laboratory for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen, 518055, PR China. Electronic address:

Designing and fabrication of smart hybrid multifunctional materials for energy/fuel production and environmental detoxification is indeed of great significance for sustainable development. Herein, we synthesized a new well-structured S-scheme heterostructure [email protected]/Boron Carbon nitride (FT/BCN) with high performance tetracycline degradation and selective CO photo-reduction to CH. Under visible light irradiation, 96. Read More

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January 2022

Fabrication of a dual S-scheme BiOI/g-CN/BiOCl heterojunction with enhanced visible-light-driven performance for phenol degradation.

Chemosphere 2022 Jan 11;287(Pt 2):132241. Epub 2021 Sep 11.

College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China; Shanghai Engineering Research Center of Power Generation Environment Protection, Shanghai, China. Electronic address:

S-scheme heterostructure can facilitate the separation of carriers while maintain outstanding redox capacity. A series of ternary BiOI/g-CN/BiOCl photocatalytic system was triumphantly synthesized via oil bath method in this work and used in photocatalytic degradation of phenol. The optimal TOC removal rate reached up to 93. Read More

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January 2022

Green synthesis of magnetically recyclable [email protected] composites from spent batteries for visible light photocatalytic degradation of phenol.

Chemosphere 2022 Jan 11;287(Pt 2):132238. Epub 2021 Sep 11.

School of Petroleum and Environmental Engineering, Yan'an University, Yan'an, 716000, PR China.

Magnetic binary heterojunctions are a kind of promising photocatalysts due to their high catalytic activity and easy magnetic separation; however, their synthesis may involve high costs or secondary environmental impacts. In this work, the magnetically recyclable [email protected] ([email protected], x = 0.00-0. Read More

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January 2022

Enhanced photocatalytic performance of visible-light-driven CuO/TiO for degradation of gaseous formaldehyde: Roles of oxygen vacancies and nano copper oxides.

Chemosphere 2021 Nov 23:133007. Epub 2021 Nov 23.

Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China. Electronic address:

Photocatalysis is an effective method for the removal of formaldehyde (HCHO), and high-efficiency visible-light-driven photocatalysts were urgently required. Herein, oxygen vacancies (OVs) and nano copper oxides (CuO) synergistically modified TiO (CuO/TiO) photocatalysts were synthesized by one-step hydrothermal followed by impregnation method. The photocatalytic decomposition of HCHO reached 100% at initial concentration of 180 ppm under relative humidity (RH) = 60% by 0. Read More

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November 2021

Rylene-Fullerene Hybrid an Emerging Electron Acceptor for High-Performing and Photothermal-Stable Ternary Solar Cells.

Small 2021 Nov 25:e2104060. Epub 2021 Nov 25.

Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China.

Molecular carbon imides, especially extended perylene diimides (PDIs) have been the best wide-band-gap nonfullerene acceptors. Despite their excellent photothermal/chemical stability, flexible reaction sites, and unique photoelectronic properties, there is still a lack of fundamental understanding of their molecular characteristics as a third component. Here, generations of PDIs with distinctive molecular architecture, are deliberately screened out as the third component to PM6:Y6. Read More

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November 2021

Porous P, Fe-doped g-CN nanostructure with enhanced photo-Fenton activity for removal of tetracycline hydrochloride: Mechanism insight, DFT calculation and degradation pathways.

Chemosphere 2021 Nov 22:133039. Epub 2021 Nov 22.

School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China. Electronic address:

This study fabricated an efficient P and Fe co-doping graphitic carbon nitride catalyst (Fe- CN/P) by thermal polymerization of melamine, FeCl, and 2-hydroxyphosphonoacetic acid (HPAA) mixture. The Fe-CN/P catalyst exhibited much better tetracycline hydrochloride (TCH) degradation performance than that of single doping and neat CN. Various characterizations indicated that the introduction of HPAA significantly increased the specific surface area of CN and improved charge separation as well as transfer efficiency. Read More

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November 2021