30,707 results match your criteria Adsorption Science & Technology[Journal]


Biomimetic nonbiofouling polypyrrole electrodes grafted with zwitterionic polymer using gamma rays.

J Mater Chem B 2020 Jul 8. Epub 2020 Jul 8.

School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea.

Bioelectrodes, including metallic and conductive polymer (CP) bioelectrodes, often suffer from biofouling by contamination from microbacteria and/or biomolecules in biological systems, which can cause substantial impairment of biofunctionality and biocompatibility. Herein, we have employed an in situ polymerization of methacryloyloxyethyl phosphorylcholine (MPC) by gamma radiation to introduce fouling-resistant properties onto the surface of the conductive polymer, polypyrrole (PPy). The concentrations of an MPC monomer were varied during the grafting. Read More

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http://dx.doi.org/10.1039/c9tb02087jDOI Listing

Microwave-assisted hydrothermal assembly of 2D copper-porphyrin metal-organic frameworks for the removal of dyes and antibiotics from water.

Environ Sci Pollut Res Int 2020 Jul 8. Epub 2020 Jul 8.

School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China.

Adsorption and photocatalysis are promising strategies to remove pollutants of dyes and antibiotics from wastewater. In this study, we demonstrate a rapid microwave-assisted hydrothermal route for the assembly of 2D copper-porphyrin Metal-Organic Frameworks (Cu-TCPP MOFs) within 1 h. The resulting 2D Cu-TCPP nanosheets with excellent crystallinity and a large surface area (342. Read More

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http://dx.doi.org/10.1007/s11356-020-09865-zDOI Listing

Insights into the Adsorption of VOCs on a Cobalt-Adeninate Metal-Organic Framework (Bio-MOF-11).

ACS Omega 2020 Jun 15;5(25):15402-15408. Epub 2020 Jun 15.

WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, Western Australia 6845, Australia.

With increasingly severe air pollution brought by volatile organic compounds (VOCs), the search for efficient adsorbents toward VOC removal is of great significance. Herein, an adenine-based metal-organic framework, namely, bio-MOF-11 [Co(ad)(CHCO)·0.3EtOH·0. Read More

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http://dx.doi.org/10.1021/acsomega.0c01504DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7331032PMC

Flexible Type Symmetric Supercapacitor Electrode Fabrication Using Phosphoric Acid-Activated Carbon Nanomaterials Derived from Cow Dung for Renewable Energy Applications.

ACS Omega 2020 Jun 22;5(25):15028-15038. Epub 2020 Jun 22.

Surfactant Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.

Porous-activated carbon (PAC) materials have been playing a vital role in meeting the challenges of the ever-increasing demand for alternative clean and sustainable energy technologies. In the present scenario, a facile approach is suggested to produce hierarchical PAC at different activation temperatures in the range of 600 to 900 °C by using cow dung (CD) waste as a precursor, and HPO is adopted as the nonconventional activating agent to obtain large surface area values. The as-prepared cow dung-based PAC (CDPAC) is graphitic in nature with mixed micro- and mesoporous textures. Read More

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http://dx.doi.org/10.1021/acsomega.0c00848DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7330913PMC

Hydrochemical data on groundwater quality for drinking and irrigation use around Dangila town, Northwest Ethiopia.

Data Brief 2020 Aug 18;31:105877. Epub 2020 Jun 18.

Newcastle University, School of Engineering, Newcastle upon Tyne, UK.

The groundwater of volcanic aquifers, dissected by various structures and affected by several volcanic eruption events, varies in quality. A large number of rural people depend on shallow aquifers tapped by shallow hand wells and springs. On the other hand, the urban population is dependant on deep aquifers using drilled boreholes. Read More

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http://dx.doi.org/10.1016/j.dib.2020.105877DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7326718PMC

A Simplified Method of Synthesis to Obtain Zwitterionic Cellulose under Mild Conditions with Active Ionic Moieties.

Molecules 2020 Jul 5;25(13). Epub 2020 Jul 5.

Department of Wood, Cellulose and Paper, CUCEI, University of Guadalajara, 45020 Guadalajara, Jalisco, Mexico.

A simplified procedure to synthesize zwitterionic cellulose by means of N-protected aspartic anhydride under mild conditions was developed. The preparation of modified cellulose samples was carried out under heterogeneous, aqueous conditions by reacting NHOH-activated cellulose with aspartic anhydrides N-protected with trifluoroacetyl (TFAc) and carbobenzyloxy (Cbz). Modified cellulose samples Cel-Asp-N-TFAc and Cel-Asp-N-Cbz were characterized by Fourier Transform Infrared (FTIR) and C solid state Nuclear Magnetic Resonance (NMR) spectroscopy. Read More

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http://dx.doi.org/10.3390/molecules25133065DOI Listing

Photocatalytic Oxidation of Propane Using Hydrothermally Prepared Anatase-Brookite-Rutile TiO Samples. An In Situ DRIFTS Study.

Nanomaterials (Basel) 2020 Jul 4;10(7). Epub 2020 Jul 4.

MCMA Group, Department of Inorganic Chemistry and Materials Institute (IUMA), Faculty of Sciences, University of Alicante, Ap. 99, E-03080 Alicante, Spain.

Photocatalytic oxidation of propane using hydrothermally synthesized TiO samples with similar primary crystal size containing different ratios of anatase, brookite and rutile phases has been studied by measuring light-induced propane conversion and in situ DRIFTS (diffuse reflectance Fourier transform infrared spectroscopy). Propane was found to adsorb on the photocatalysts, both in the absence and presence of light. The extent of adsorption depends on the phase composition of synthesized titania powders and, in general, it decreases with increasing rutile and brookite content. Read More

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http://dx.doi.org/10.3390/nano10071314DOI Listing

An Electrochemical Immunosensor for Sensitive Detection of the Tumor Marker Carcinoembryonic Antigen (CEA) Based on Three-Dimensional Porous Nanoplatinum/Graphene.

Micromachines (Basel) 2020 Jul 3;11(7). Epub 2020 Jul 3.

Medical College, Henan University of Science and Technology, Luoyang 471023, China.

Carcinoembryonic antigen (CEA) is an important broad-spectrum tumor marker. The quantitative detection of a low concentration of CEA has important medical significance. In this study, three-dimensional porous graphene-oxide-supported platinum metal nanoparticles (3DPt/HGO) composites were prepared by a wet chemical method and modified on an electrode with enhanced conductivity, a large surface area, and good adsorption of immobilizing antibodies (Ab). Read More

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http://dx.doi.org/10.3390/mi11070660DOI Listing

Use of a clay mineral and its nonionic and cationic organoclay derivatives for the removal of pharmaceuticals from rural wastewater effluents.

Chemosphere 2020 Jul 1;259:127480. Epub 2020 Jul 1.

Institut des Sciences de La Terre D'Orléans, UMR 7327, CNRS-Université D'Orléans, 1A Rue de La Férollerie, 45071 Orléans Cedex 2, France; Global Center for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan. Electronic address:

A Na exchanged montmorillonite clay (Na-Mt) and its organoclay derivatives prepared with benzyldimethyltetradecylammonium (BDTA) cationic and polyoxyethylene (20)oleyl-ether (Brij-O20) non-ionic surfactants were used for first time at our knowledge as adsorbents the removal diverse pharmaceuticals (PPs) from samples collected in a rural wastewater facility (town of Josnes in France). The selected facility showed a poor efficiency for the elimination of PPs that were permanently release to the environment. Although involving different interactional mechanisms, the whole adsorbents Na-Mt, nonionic Brij-Mt and cationic BDTA-Mt organoclays, could remove the entire PPs of various chemical nature in a low concentration regime (ng L), where electrostatic interactions mainly controlled the adsorption. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127480DOI Listing

Fabrication porous adsorbents templated from modified sepiolite-stabilized aqueous foams for high-efficient removal of cationic dyes.

Chemosphere 2020 Jun 17;259:126949. Epub 2020 Jun 17.

Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, PR China. Electronic address:

High internal phase emulsions (HIPEs) as template for fabrication of porous materials has attracted much attention, due to the high porosity and tunable porous structure. But the enormous consumption of organic solvents is still a nightmare for the practical application. In comparison, the aqueous foam without need any organic solvent and hence has greater advantages in the porous materials preparation. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.126949DOI Listing

Zwitterion composite chitosan-epichlorohydrin/zeolite for adsorption of methylene blue and reactive red 120 dyes.

Int J Biol Macromol 2020 Jul 4. Epub 2020 Jul 4.

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

In this research, an attempt to develop zwitterion composite adsorbent is conducted by modifying chitosan (CHS) with a covalent cross-linker (epichlorohydrin, ECH) and an aluminosilicate mineral (zeolite, ZL). The zwitterion composite adsorbent of chitosan-epichlorohydrin/zeolite (CHS-ECH/ZL) is performed multifunctional tasks by removing two structurally different cationic (methylene blue dye, MB), and anionic (reactive red 120 dye, RR120) dyes from aqueous solutions. The surface property, crystallinity, morphology, functionality, and charge of the CHS-ECH/ZL are analyzed using BET, XRD, SEM, FTIR, and pH, analyses. Read More

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http://dx.doi.org/10.1016/j.ijbiomac.2020.07.014DOI Listing
July 2020
2.858 Impact Factor

Reduced graphene oxide mitigates cadmium-induced cytotoxicity and oxidative stress in HepG2 cells.

Food Chem Toxicol 2020 Jul 4:111515. Epub 2020 Jul 4.

King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, 11451, Saudi Arabia; Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.

Numerous applications of reduced graphene oxide (RGO) and pervasive cadmium (Cd) have led concern about their co-exposure to the environment and human. We studied the combined effects of RGO and Cd in human liver (HepG2) cells. Initially, we found that RGO (up to 50 μg/ml) did not harm to HepG2 cells while Cd induced dose-dependent (1-10 μg/ml) cytotoxicity. Read More

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http://dx.doi.org/10.1016/j.fct.2020.111515DOI Listing

Computer simulation aided preparation of molecularly imprinted polymers for separation of bilobalide.

J Mol Model 2020 Jul 6;26(8):198. Epub 2020 Jul 6.

Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, People's Republic of China.

In this study, the preparation of molecularly imprinted polymers for bilobalide (BBMIPs) was successfully achieved by bulk polymerization with methacrylamide (MAM), trimethylolpropane triacrylate (TMPTA), and acetonitrile (ACN) as functional monomer, cross-linker, and solvent, respectively. After Gaussian software simulation and single factor experiments, the prepared MIPs with a molar ratio of 1:4:15 for BB-MAM-TMPTA were systematically characterized. The hydrogen bonding interaction between BB and MAM was confirmed by a combination of FTIR and NMR analysis. Read More

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http://dx.doi.org/10.1007/s00894-020-04460-yDOI Listing

Arsenate Adsorption on Different Fractions of Iron Oxides in the Paddy Soil from the Karst Region of China.

Bull Environ Contam Toxicol 2020 Jul 6. Epub 2020 Jul 6.

Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China.

Adsorption of arsenate, a common soil contaminant, on natural occurring iron oxides controls arsenate adsorption on soils, especially on iron rich soils. However, soils contain multiple iron minerals and their contributions for arsenate adsorption on the bulk soil are unclear. In this study, Wenzel's sequential extraction procedure (SEP) was used to characterize different fractions of iron oxides in the paddy soils from Guangxi, China. Read More

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http://dx.doi.org/10.1007/s00128-020-02925-7DOI Listing

Selective Adsorption, Reduction, and Separation of Au(III) from Aqueous Solution with Amine-Type Non-Woven Fabric Adsorbents.

Materials (Basel) 2020 Jul 2;13(13). Epub 2020 Jul 2.

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.

Herein, adsorption, separation, and reduction of Au(III) from its aqueous solution were studied with different amine-type, non-woven fabric (NF) adsorbents fabricated with radiation-induced graft polymerization. The adsorbents exhibited different adsorption capacities of Au(III) over a concentration range of hydrochloric acid (HCl) from 5 mM to 5 M, and the diethylamine (DEA)-type adsorbent performed best under all test conditions. The DEA-type adsorbent was inert toward other metal ions, including Cu(II), Pb(II), Ni(II), Zn(II) and Li(I), within the fixed concentration range of HCl. Read More

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http://dx.doi.org/10.3390/ma13132958DOI Listing

Recent Advances and Impact of Chemotherapeutic and Antiangiogenic Nanoformulations for Combination Cancer Therapy.

Pharmaceutics 2020 Jun 25;12(6). Epub 2020 Jun 25.

Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, 20520 Turku, Finland.

Traditional chemotherapy, along with antiangiogenesis drugs (combination cancer therapy), has shown reduced tumor recurrence and improved antitumor effects, as tumor growth and metastasis are often dependent on tumor vascularization. However, the effect of combination chemotherapy, including synergism and additive and even antagonism effects, depends on drug combinations in an optimized ratio. Hence, nanoformulations are ideal, demonstrating a great potential for the combination therapy of chemo-antiangiogenesis for cancer. Read More

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http://dx.doi.org/10.3390/pharmaceutics12060592DOI Listing

Purification of Aqueous Media by Biochars: Feedstock Type Effect on Silver Nanoparticles Removal.

Molecules 2020 Jun 25;25(12). Epub 2020 Jun 25.

Institute of Soil Science, Agrotechnology and Plant Protection "N. Poushkarov", Shosse Bankya 7, Sofia 1080, Bulgaria.

Due to the harmful effects of nanoparticles in the environment, their effective removal from aqueous media is of great importance. This paper described the research on the silver nanoparticles (Ag-NPs) sorption on biochars obtained from different feedstock types. The sorbents were produced through pyrolysis (double-barrel method) of the vineyard (BV), paulownia tree (BP), and tobacco (BT). Read More

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http://dx.doi.org/10.3390/molecules25122930DOI Listing

Effect of Pressure and Temperature on CO/CH Competitive Adsorption on Kaolinite by Monte Carlo Simulations.

Materials (Basel) 2020 Jun 25;13(12). Epub 2020 Jun 25.

Key Laboratory of In-situ Property-improving Mining of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China.

The adsorption of CO and CO/CH mixtures on kaolinite was calculated by grand canonical Monte Carlo (GCMC) simulations with different temperatures (283.15, 293.15, and 313. Read More

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http://dx.doi.org/10.3390/ma13122851DOI Listing

Surfactant Interactions with Protein-Coated Surfaces: Comparison between Colloidal and Macroscopically Flat Surfaces.

Biomimetics (Basel) 2020 Jul 1;5(3). Epub 2020 Jul 1.

Department of Chemistry, University of Bari, via Orabona 4, 70125 Bari, Italy.

Surface interactions with polymers or proteins are extensively studied in a range of industrial and biomedical applications to control surface modification, cleaning, or biofilm formation. In this study we compare surfactant interactions with protein-coated silica surfaces differing in the degree of curvature (macroscopically flat and colloidal nanometric spheres). The interaction with a flat surface was probed by means of surface plasmon resonance (SPR) while dynamic light scattering (DLS) was used to study the interaction with colloidal SiO (radius 15 nm). Read More

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http://dx.doi.org/10.3390/biomimetics5030031DOI Listing

Recent Advances in the Electrochemical Sensing of Venlafaxine: An Antidepressant Drug and Environmental Contaminant.

Sensors (Basel) 2020 Jun 30;20(13). Epub 2020 Jun 30.

Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Korea.

Venlafaxine (VEN), as one of the popular anti-depressants, is widely utilized for the treatment of major depressive disorder, panic disorder, as well as anxiety. This drug influences the chemicals in the brain, which may result in imbalance in depressed individuals. However, venlafaxine and its metabolites are contaminants in water. Read More

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http://dx.doi.org/10.3390/s20133675DOI Listing

Synergetic Effect of 2-Methacryloyloxyethyl Phosphorylcholine and Mesoporous Bioactive Glass Nanoparticles on Antibacterial and Anti-Demineralisation Properties in Orthodontic Bonding Agents.

Nanomaterials (Basel) 2020 Jun 30;10(7). Epub 2020 Jun 30.

Department of Orthodontics, Dental Research Institute, Pusan National University, Yangsan 50612, Korea.

2-methacryloyloxyethyl phosphorylcholine (MPC) is known to have antibacterial and protein-repellent effects, whereas mesoporous bioactive glass nanoparticles (MBN) are known to have remineralisation effects. We evaluated the antibacterial and remineralisation effects of mixing MPC and MBN at various ratios with orthodontic bonding agents. MPC and MBN were mixed in the following weight percentages in CharmFil-Flow (CF): CF, 3% MPC, 5% MPC, 3% MPC + 3% MBN, and 3% MPC + 5% MBN. Read More

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http://dx.doi.org/10.3390/nano10071282DOI Listing

Adsorption of plantaricin Q7 on montmorillonite and application in feedback regulation of plantaricin Q7 synthesis by Q7.

Eng Life Sci 2019 Jan 15;19(1):57-65. Epub 2018 Nov 15.

School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin Heilongjiang P. R. China.

Kieselguhr, bentonite, and montmorillonite were investigated as potential carriers of plantaricin Q7. Highest level of adsorption of plantaricin Q7 was obtained with montmorillonite. Meanwhile, visible inhibition zones were observed against for montmorillonite adsorbed with plantaricin Q7. Read More

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http://dx.doi.org/10.1002/elsc.201800086DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6999430PMC
January 2019

Protein adsorption onto monoliths: A surface energetics study.

Eng Life Sci 2018 Mar 29;18(3):179-186. Epub 2017 Nov 29.

Department of Biotechnology University of Malakand Chakdara Dir (Lower) Pakistan.

This part of work was done to explore the basic understanding of the adsorption chromatography by determining the interaction of selected model proteins ( = 5) to monolithic chromatographic materials, with varying densities of butyl and phenyl ligands. Surface energetics approach was applied to study the interaction behavior. The physicochemical properties of the proteins and monolithic chromatographic materials were explored by contact angle and zeta potential values. Read More

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http://dx.doi.org/10.1002/elsc.201700097DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6999196PMC

Agarose bioplastic-based drug delivery system for surgical and wound dressings.

Eng Life Sci 2017 Feb 12;17(2):204-214. Epub 2016 Oct 12.

Department of Materials Science and Engineering Indian Institute of Technology Kanpur Kanpur India.

We have developed an agarose-based biocompatible drug delivery vehicle. The vehicle is in the form of thin, transparent, strong and flexible films. The biocompatibility and haemocompatibility of the films is confirmed using direct and indirect contact biological assay. Read More

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http://dx.doi.org/10.1002/elsc.201500116DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6999305PMC
February 2017

Iron-nickel bimetallic metal-organic frameworks as bifunctional Fenton-like catalysts for enhanced adsorption and degradation of organic contaminants under visible light: Kinetics and mechanistic studies.

J Hazard Mater 2020 Jun 22;401:123261. Epub 2020 Jun 22.

Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100086, China; Department of Civil and Environmental Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK. Electronic address:

Iron-nickel bimetallic organic frameworks (FeNi-BDC, HBDC: terephthalic acid) were developed as bifunctional materials for adsorption and photo-Fenton degradation of organic dyes with different charge properties. Significantly enhanced adsorption capacity of FeNi-BDC towards methylene blue (MB) and methyl orange (MO) was achieved, 5.3 and 2. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123261DOI Listing

Role of MnO in controlling iron and arsenic mobilization from illuminated flooded arsenic-enriched soils.

J Hazard Mater 2020 Jul 1;401:123362. Epub 2020 Jul 1.

Zhejiang Provincial Key Laboratory of Watershed Science & Health, School of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China; Department of Land, Air and Water Resources, University of California, Davis, Davis, CA, 95616, United States.

This study examined the role of intermittent illumination/dark conditions coupled with MnO-ammendments to regulate the mobility of As and Fe in flooded arsenic-enriched soils. Addition of MnO particles with intermittent illumination led to a pronounced increase in the reductive-dissolution of Fe(III) and As(V) from flooded soils compared to a corresponding dark treatments. A higher MnO dosage (0. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123362DOI Listing

Singlet oxygen mediated the selective removal of oxytetracycline in C/FeC/Fe system as compared to chloramphenicol.

Environ Int 2020 Jul 3;143:105899. Epub 2020 Jul 3.

School of Environmental Science and Engineering, Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510006, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China. Electronic address:

Reactive oxygen species (ROS) production for Fe is limited because of the formed iron corrosion products. In this study, C/FeC/Fe composite which produces enhanced ROS has been specifically designed and fabricated to remove typical antibiotics (i.e. Read More

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http://dx.doi.org/10.1016/j.envint.2020.105899DOI Listing

Anti-amoebic potential of azole scaffolds and nanoparticles against pathogenic Acanthamoeba.

Acta Trop 2020 Jul 3:105618. Epub 2020 Jul 3.

Department of Biology, Chemistry and Environmental Sciences, College of Arts and Sciences, American University of Sharjah, Sharjah 26666, United Arab Emirates.

Acanthamoeba spp. are free living amoeba (FLA) which are widely distributed in nature. They are opportunistic parasites and can cause severe infections to the eye, skin and central nervous system. Read More

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http://dx.doi.org/10.1016/j.actatropica.2020.105618DOI Listing

Headspace solid-phase microextraction sampling of endogenous aldehydes in biological fluids using a magnetic metal-organic framework/polyaniline nanocomposite.

J Sep Sci 2020 Jul 6. Epub 2020 Jul 6.

Department of Chemistry, Lorestan University, Khoramabad, Iran.

Nano-porosity, crystal structure, good thermal and mechanical stability, high surface-to-volume ratio, nanoscale cavities, and uniform pore topology have made metal-organic frameworks (MOFs) one of the best class of sorbents for adsorption/separation purposes. In this research, a metal-organic framework/polyaniline magnetite nanocomposite was synthesized and intercalated by polyaniline by electrophoretic deposition on the surface of a thin steel wire, to prepare a solid-phase microextraction fiber. It was coupled with gas chromatography-flame ionization detection and employed for the extraction and determination of aldehydes in biological samples. Read More

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http://dx.doi.org/10.1002/jssc.202000401DOI Listing

Anisotropic electron conductance driven by reaction byproducts on a porous network of dibromobenzothiadiazole on Cu(110).

Angew Chem Int Ed Engl 2020 Jul 6. Epub 2020 Jul 6.

Ikerbasque, Basque Foundation for Science, Centro de Fisica de Materiales, SanSebastian, paseo M de Lardizabal 5, 20018, San Sebastian, SPAIN.

Efficiency in charge-transport is a fundamental but demanding prerequisite to allow better exploitation of molecular functionalities in organic electronics and energy-conversion systems. Here, we report on a mechanism that enables a one-dimensional conductance structure by connecting discrete molecular states at 2.1eV through the pores of a metal-organic network on Cu(110). Read More

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http://dx.doi.org/10.1002/anie.202008297DOI Listing

Surface precipitation of Mn on clay minerals enhances Cd sorption under anoxic conditions.

Environ Sci Process Impacts 2020 Jul 6. Epub 2020 Jul 6.

Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science, ETH Zurich, Universitätstrasse 16, CHN, 8092 Zurich, Switzerland.

The influence of Mn2+ on the sorption of metal(loid)s onto clay minerals is still unclear despite its relevance in suboxic and anoxic environments which often exhibit elevated dissolved Mn2+ concentrations. In this study, the effects of Mn2+ on Cd2+ sorption to two types of clay minerals, a well-crystalline natural kaolinite (KGa-1b) and a synthetic montmorillonite (Syn-1), were investigated. Batch experiments on Mn2+ and Cd2+ sorption to Ca-saturated KGa-1b and Syn-1 were conducted under anoxic conditions. Read More

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http://dx.doi.org/10.1039/d0em00155dDOI Listing

Soy/whey protein isolates: Interfacial properties and effects on the stability of oil-in-water emulsions.

J Sci Food Agric 2020 Jul 6. Epub 2020 Jul 6.

College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China.

Background: The adsorption of proteins at oil/water interfaces can reduce interfacial tension and increase emulsion stability. However, emulsions stabilized by soy protein isolate (SPI) are not sufficiently stable. Using SPI as a control, a theoretical basis for the adsorption behavior of mixed SPI and whey protein isolate (WPI) at the oil/water interface was established and the effects of the protein ratio and content on the emulsion stability were studied. Read More

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http://dx.doi.org/10.1002/jsfa.10638DOI Listing

Biomass hydrodeoxygenation catalysts innovation from atomistic activity predictors.

Philos Trans A Math Phys Eng Sci 2020 Jul 6;378(2176):20200056. Epub 2020 Jul 6.

Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK.

Circular economy emphasizes the idea of transforming products involving economic growth and improving the ecological system to reduce the negative consequences caused by the excessive use of raw materials. This can be achieved with the use of second-generation biomass that converts industrial and agricultural wastes into bulk chemicals. The use of catalytic processes is essential to achieve a viable upgrade of biofuels from the lignocellulosic biomass. Read More

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http://dx.doi.org/10.1098/rsta.2020.0056DOI Listing

Octane isomer dynamics in H-ZSM-5 as a function of Si/Al ratio: a quasi-elastic neutron scattering study.

Philos Trans A Math Phys Eng Sci 2020 Jul 6;378(2176):20200063. Epub 2020 Jul 6.

UK Catalysis Hub, Research Complex at Harwell, Science and Technology Facilities Council Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Oxon OX11 0QX, UK.

Dynamical behaviour of octane and 2,5-dimethylhexane in H-ZSM-5 zeolite catalysts of differing Si/Al ratios (15 and 140) was probed using quasi-elastic neutron scattering, to understand molecular shape and Brønsted acid site density effects on the behaviour of common species in the fluid catalytic cracking (FCC) process, where H-ZSM-5 is an additive catalyst. Between 300 and 400 K, -octane displayed uniaxial rotation around its long axis. However, the population of mobile molecules was larger in H-ZSM-5(140), suggesting that the lower acid site concentration allows for more molecules to undergo rotation. Read More

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http://dx.doi.org/10.1098/rsta.2020.0063DOI Listing

High crosslinked sodium carboxyl methylstarch-g-poly (acrylic acid-co-acrylamide) resin for heavy metal adsorption: its characteristics and mechanisms.

Environ Sci Pollut Res Int 2020 Jul 5. Epub 2020 Jul 5.

College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, 610500, People's Republic of China.

A lower expansive heavy metal adsorbent, high crosslinked sodium carboxyl methylstarch-g-poly (acrylic acid-co-acrylamide) resin (HCAA), has been prepared by enhancing the crosslinking degree of the traditional water-absorbing polymer under the graft copolymerization reaction. Further heavy metal adsorption experiments, morphology analysis, and structure characteristic observations indicate that HCAA resin has an excellent heavy metal adsorption properties for Cr, Cu, Ni, and Zn of 80.08, 158. Read More

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http://dx.doi.org/10.1007/s11356-020-09945-0DOI Listing

Functional wastepaper-montmorillonite composite aerogel for Cd adsorption.

Environ Sci Pollut Res Int 2020 Jul 5. Epub 2020 Jul 5.

College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China.

In this study, a composite aerogel (WP-MMT) composed of wastepaper (WP) and montmorillonite (MMT) was prepared by ambient pressure drying technology to adsorb Cd. The study of compression performance indicated that the composite aerogel had ideal mechanical strength when the mass ratio of WP to MMT was 1:1. The specific surface areas of the aerogels modified by hydrogen peroxide (WP-MMT-HO) and sodium hydroxide (WP-MMT-NaOH) were increased greatly. Read More

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http://dx.doi.org/10.1007/s11356-020-09907-6DOI Listing

Facile preparation of L-cysteine-modified cellulose microspheres as a low-cost adsorbent for selective and efficient adsorption of Au(III) from the aqueous solution.

Environ Sci Pollut Res Int 2020 Jul 4. Epub 2020 Jul 4.

State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.

A facile method to synthesize adsorbent based on cellulose modified by amino acid was developed. The novel L-cysteine-functionalized adsorbent for Au(III) recovery was synthesized via radiation grafting technique. Glycidyl methacrylate (GMA) was grafted on the surface of microcrystalline cellulose microsphere (MCC); next, ring-opening reaction was performed to immobilize L-cysteine. Read More

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http://dx.doi.org/10.1007/s11356-020-09789-8DOI Listing

Heavy metal ions' poisoning behavior-inspired etched UiO-66/CTS aerogel for Pb(II) and Cd(II) removal from aqueous and apple juice.

J Hazard Mater 2020 Jun 29;401:123318. Epub 2020 Jun 29.

College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, Shaanxi, 712100, PR China. Electronic address:

Here, inspired by the poisoning process of heavy metal in human body that the accidental ingested heavy metal can anchor to the functional groups of DNA/protein/enzyme to exert their toxicities during the rapid blood circulation, we developed the adsorbent that enveloped Etched UiO-66 with abundant functional groups into chitosan (CTS) aerogel to capture Pb(II) and Cd(II) in aqueous and apple juice. SEM, XRD and FTIR spectra were used to characterize the Etched UiO-66/CTS aerogel. The results showed that Etched UiO-66/CTS aerogel has a three-dimensional porous structure, and -OH groups of CTS interact with Zr(IV) of Etched UiO-66 to form the stable UiO-66/CTS aerogel. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123318DOI Listing

A new whole-cell biocatalyst for sulfur dioxide filtering and degradation.

Bioresour Technol 2020 Jun 30;314:123755. Epub 2020 Jun 30.

Department of Chemistry, College of Science, Shiraz University, Shiraz, Iran. Electronic address:

In this study, the interaction of the magnetotactic bacterium with sulfite compounds and their potential to degrade SO was investigated using cyclic voltammetry (CV), molecular emission cavity analysis (MECA) and ion-exchange chromatography (IEC). This biofilter was able to degrade SO up to 22281 mg m by disproportionation reaction and the formation of S and SO with ≥99% efficiency. Designed biofilter was able to restart the initial performance at least after seven cycles if it was used at 14-day intervals. Read More

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http://dx.doi.org/10.1016/j.biortech.2020.123755DOI Listing

Recycling application of waste long-root Eichhornia crassipes in the heavy metal removal using oxidized biochar derived as adsorbents.

Bioresour Technol 2020 Jun 27;314:123749. Epub 2020 Jun 27.

National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai 200237, China; State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China.

An oxidized biochar was prepared using long-root Eichhornia crassipes through an aerobic/anaerobic hybrid calcination to recycle its waste plants after eutrophic treatments. The adsorption performances of the biochar were investigated and the results showed that the adsorption equilibrium could arrive in 30 min and the adsorption capacities for Pb, Cu, Cd and Zn at 30 °C were 0.57, 0. Read More

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http://dx.doi.org/10.1016/j.biortech.2020.123749DOI Listing

Barium isotopic fractionation during strong weathering of basalt in a tropical climate.

Environ Int 2020 Jul 2;143:105896. Epub 2020 Jul 2.

CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China; CAS Center for Excellence in Comparative Planetology, University of Science and Technology of China, Hefei, Anhui 230026, China. Electronic address:

Barium (Ba) is an element which is toxic to humans, plants, and animals. Deciphering the geochemical behavior of Ba in soils is fundamental for assessing the potentials risks posed by Ba. Ba isotopes are a potentially robust tracer of Ba in soils. Read More

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http://dx.doi.org/10.1016/j.envint.2020.105896DOI Listing

Sorption and degradation of ranitidine in soil: Leaching potential assessment.

Chemosphere 2020 Jul 1;259:127495. Epub 2020 Jul 1.

Department of Chemistry, College of Science, Al-Nahrain University, Baghdad, Iraq.

Pharmaceuticals have been categorized as emerging contaminants that may be hazardous to the environment. To assess their environmental risk, understanding their fate and behaviour is highly needed, particularly in soil where little is known. This study investigated sorption, degradation and mobility potential of ranitidine (RAN) from soil to groundwater in two soils with different physicochemical properties. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127495DOI Listing

Nitrogen-deficient g-CN/POMs porous nanosheets with P-N heterojunctions capable of the efficient photocatalytic degradation of ciprofloxacin.

Chemosphere 2020 Jun 20;259:127465. Epub 2020 Jun 20.

College of Science, Central South University of Forestry and Technology, Changsha, 410004, PR China. Electronic address:

The direct shedding of piperazine rings is critical for the degradation of antibiotic persistent organic pollutants. In this work, nitrogen-deficient g-CN loaded with polyoxometalates porous photocatalysts with P-N heterojunctions were carried out through the formation of chemical bonds between the nitrogen-deficient C in g-CN and the bridging oxygen in polyoxometalates (POMs), including phosphomolybdic acid (PMA), phosphotungstic acid (PTA) and silicotungstic acid (STA). The adsorption and photocatalysis experiments confirm the ability of the g-CN/POMs nanosheets to efficiently remove ciprofloxacin via the synergistic effects of adsorption and photo-catalysis. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127465DOI Listing

Incorporation of iron (oxyhydr)oxide nanoparticles with expanded graphite for phosphorus removal and recovery from aqueous solutions.

Chemosphere 2020 Jun 23;259:127395. Epub 2020 Jun 23.

Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea. Electronic address:

In this work, iron (oxyhydr)oxide nanoparticle-doped expanded graphite (IO/EG-1 and IO/EG-2) was prepared via a hydrothermal reaction and applied for the phosphorus adsorption in the aqueous solutions. The analysis of scanning electron microscopy (SEM) and X-ray diffraction (XRD) verified the successful fabrication of IO/EGs, and iron (oxyhydr)oxide nanoparticles became more crystalized according to the calcination at high temperature (IO/EG-2). The maximum adsorption capacity of IO/EG-1 was considerably higher (7. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127395DOI Listing

Simultaneous removal of para-arsanilic acid and the released inorganic arsenic species by CuFe2O4 activated peroxymonosulfate process.

Sci Total Environ 2020 Jun 29;742:140587. Epub 2020 Jun 29.

School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.

para-arsanilic acid (p-ASA), as a major phenylarsonic feed additive, was used annually in many countries. Once it enters the water environment, p-ASA would be transformed into hypertoxic inorganic arsenic species, causing severe arsenic pollution. In this study, magnetic copper ferrite (CuFeO) was applied to activate peroxymonosulfate (PMS) for p-ASA removal and synchronous control of the released inorganic arsenic species. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.140587DOI Listing
June 2020
4.099 Impact Factor

Functionalized porous magnetic cellulose/FeO beads prepared from ionic liquid for removal of dyes from aqueous solution.

Int J Biol Macromol 2020 Jul 2. Epub 2020 Jul 2.

Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada. Electronic address:

Porous magnetic cellulose/FeO beads (CFBs), consisting of cellulose as matrix and ferrosoferric oxide, were successfully fabricated from microcrystalline cellulose dissolved in an ionic liquid and further modified with glutaric anhydride. The porous structure of modified magnetic cellulose/FeO beads (MCFBs) was created by nano-sized calcium carbonate (CaCO). The resulting MCFBs were well characterized and employed as effective adsorbents for removal of dyes from aqueous solution. Read More

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http://dx.doi.org/10.1016/j.ijbiomac.2020.06.280DOI Listing

Preparation of visible light-responsive photocatalytic paper containing BiVO@diatomite/MCC/PVBCFs for degradation of organic pollutants.

Ecotoxicol Environ Saf 2020 Jul 1;202:110897. Epub 2020 Jul 1.

Material Science and Engineering College,Northeast Forestry University,Harbin,Heilongjiang, 150040,China; Jiangsu Key Laboratory for Biomass Energy and Material,Nanjing,Jiangsu, 210046,China. Electronic address:

Combining adsorption and photocatalysis is an effective strategy for degrading organic pollutants. Here, BiVO@diatomite composite photocatalyst (BiVO@diatomite CP) was prepared by hydrothermal synthesis from Bi(NO)·5HO glycerin solution, NHVO solution and diatomite. BiVO@diatomite/microcrystalline cellulose/PVB composite fibers (BiVO@diatomite/MCC/PVBCFs) were prepared from BiVO@diatomite CPs, microcrystalline cellulose (MCC) and PVB ethanol solution using the electrospinning method. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2020.110897DOI Listing

Protein corona-mediated transport of nanoplastics in seawater-saturated porous media.

Water Res 2020 May 29;182:115978. Epub 2020 May 29.

State Key Laboratory of Pollution Control and Resource Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China. Electronic address:

The offshore aquaculture environment is a potential water area with high concentrations of tiny plastics and feeding proteins. In this study, the negatively charged bovine serum albumin (BSA) and the positively charged lysozyme (LSZ) were used to explore the effects of protein corona on the aggregation, transport, and retention of polystyrene nanoplastics (NPs; 200, 500, and 1000 nm) in sea sand saturated with seawater of 35 practical salinity units (PSU). The BSA corona, which was formed by the adsorption of BSA on the surface of NPs, drove the dispersion of NPs (200 and 500 nm) due dominantly to the induced colloidal steric hindrance. Read More

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http://dx.doi.org/10.1016/j.watres.2020.115978DOI Listing

Exploring the confinement of polymer nanolayers into ordered mesoporous silica using advanced gas physisorption.

J Colloid Interface Sci 2020 Jun 3;579:489-507. Epub 2020 Jun 3.

Department of Inorganic Chemistry - Functional Materials, Faculty of Chemistry, University of Vienna, Währinger Straße 42, Vienna 1090, Austria. Electronic address:

Over the last two decades, in parallel to the rise of ordered mesoporous silica, porous nanostructured polymer-silica composites have attracted the interest of material scientists due to their promising perspectives of application as sorbents, ion-exchangers, supports, and catalysts. While knowledge is available regarding their synthesis and applications, understanding and controlling their pore properties in order to rationalize their performances remain challenging tasks. Greater knowledge is therefore needed regarding their precise characterization, especially using gas adsorption. Read More

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http://dx.doi.org/10.1016/j.jcis.2020.05.103DOI Listing

Growth inhibition of Microcystis aeruginosa and adsorption of microcystin toxin by the yeast Aureobasidium pullulans, with no effect on microalgae.

Environ Sci Pollut Res Int 2020 Jul 3. Epub 2020 Jul 3.

College of Science, Department of Biology, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia.

This study evaluates the inhibitory effect of a yeast strain, Aureobasidium pullulans KKUY0701, isolated from decayed cyanobacterial bloom against harmful cyanobacterium Microcystis aeruginosa and determines the ability of this strain to remove microcystin (MC) toxin from the water. The antialgal activity of this yeast strain was assayed by co-cultivation with M. aeruginosa, diatom, and green algal species. Read More

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http://dx.doi.org/10.1007/s11356-020-09902-xDOI Listing