Heterogeneous photocatalysis and its potential applications in water and wastewater treatment: a review

Nanotechnology, Journal Year: 2018, Volume and Issue: 29(34), P. 342001 - 342001

Published: May 22, 2018

There has been a considerable amount of research in the development sustainable water treatment techniques capable improving quality water. Unavailability drinkable is crucial issue especially regions where conventional drinking systems fail to eradicate aquatic pathogens, toxic metal ions and industrial waste. The this area have given rise new class processes called advanced oxidation processes, particularly form heterogeneous photocatalysis, which converts photon energy into chemical energy. Advances nanotechnology improved ability develop specifically tailor properties photocatalytic materials used area. This paper discusses many those nanomaterials, both metal-based metal-free, studied for waste purification recent years. It also design performance recently reactors, along with advancements visible-light photocatalysis. Additionally, effects fundamental parameters such as temperature, pH, catalyst-loading reaction time reviewed. Moreover, different that can increase efficiency well recyclability systematically presented, followed by discussion on actual wastewater samples future challenges associated it.

Language: Английский

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Photocatalytic degradation of ciprofloxacin by a novel Z-scheme CeO2–Ag/AgBr photocatalyst: Influencing factors, possible degradation pathways, and mechanism insight

Journal of Catalysis, Journal Year: 2017, Volume and Issue: 358, P. 141 - 154

Published: Dec. 23, 2017

Language: Английский

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A novel Ag2O/CeO2 heterojunction photocatalysts for photocatalytic degradation of enrofloxacin: possible degradation pathways, mineralization activity and an in depth mechanism insight

Applied Catalysis B Environment and Energy, Journal Year: 2017, Volume and Issue: 221, P. 701 - 714

Published: Sept. 28, 2017

Language: Английский

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The application of different typological and structural MOFs-based materials for the dyes adsorption

Coordination Chemistry Reviews, Journal Year: 2018, Volume and Issue: 380, P. 471 - 483

Published: Nov. 22, 2018

Language: Английский

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In Situ Grown AgI/Bi₁₂O₁₇Cl₂ Heterojunction Photocatalysts for Visible Light Degradation of Sulfamethazine: Efficiency, Pathway, and Mechanism

ACS Sustainable Chemistry & Engineering, Journal Year: 2018, Volume and Issue: 6(3), P. 4174 - 4184

Published: Jan. 17, 2018

Visible-light-driven photocatalysts attract great interest because they can utilize more sunlight for reactions than conventional photocatalysts. A novel visible-light-driven photocatalyst AgI/Bismuth oxychloride (Bi12O17Cl2) hybrid was synthesized by a hydrothermal-precipitation method. Several characterization tools, such as X-ray powder diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission (HRTEM), photoelectron spectroscopy (XPS), and UV–vis diffuse reflectance (DRS) were employed to study the phase structures, morphologies, optical properties of fabricated These characterizations indicated that AgI nanoparticles evenly distributed on surface Bi12O17Cl2, heterostructures formed. The photochemical demonstrated promoted separation carrier transfer in AgI/Bi12O17Cl2 heterojunction achieved. degradation rate sulfamethazine (SMZ) about 7.8 times 35.2 higher pristine Bi12O17Cl2 BiOCl under photocatalysts, respectively. It also found amount composites played an important role photocatalytic activity, optimized ratio 25%. shows good catalytic stability maintains similar reactivity after four cycles. Furthermore, intermediates SMZ identified HPLC-MS, mechanism proposed. findings highlight contaminant elimination open avenues rational design highly efficient

Language: Английский

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Study of the photocatalytic degradation pathway of norfloxacin and mineralization activity using a novel ternary Ag/AgCl-CeO 2 photocatalyst

Journal of Catalysis, Journal Year: 2017, Volume and Issue: 355, P. 73 - 86

Published: Sept. 29, 2017

Language: Английский

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Photocatalytic degradation of levofloxacin by ternary Ag2CO3/CeO2/AgBr photocatalyst under visible-light irradiation: Degradation pathways, mineralization ability, and an accelerated interfacial charge transfer process study

Journal of Catalysis, Journal Year: 2018, Volume and Issue: 358, P. 211 - 223

Published: Jan. 4, 2018

Language: Английский

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Rational Design of Carbon-Doped Carbon Nitride/Bi₁₂O₁₇Cl₂ Composites: A Promising Candidate Photocatalyst for Boosting Visible-Light-Driven Photocatalytic Degradation of Tetracycline

ACS Sustainable Chemistry & Engineering, Journal Year: 2018, Volume and Issue: 6(5), P. 6941 - 6949

Published: April 9, 2018

Many recent advances based on 2D materials have opened new possibilities in photocatalysis. In this paper, a semiconductor composite consisting of carbon-doped carbon nitride (denoted as CCN) layers and Bi12O17Cl2 was designed via an situ method. A supramolecular chemistry approach employed to form CCN by using the hydrogen-bonded melamine–cyanuric acid barbituric acid, were obtained moderate solvothermal CCN/Bi12O17Cl2 had superior photocatalytic performance for degrading antibiotic tetracycline (TC) under visible-light irradiation. The degradation rate constant 20%CCN/Bi12O17Cl2 is 0.0409 min–1, which approximately 2.9-, 1.5-, 32.1-fold those pristine Bi12O17Cl2, CCN, BiOCl, respectively. Electrochemical measurements showed that has high photogenerated charge carrier separation efficiency. According trapping electron spin resonance results, superoxide radicals holes main active TC. enhanced activity can be attributed separation. It expected could utilized photocatalyst other environmental applications.

Language: Английский

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Photocatalytic degradation of bisphenol A in aqueous media: A review

Journal of Environmental Management, Journal Year: 2018, Volume and Issue: 213, P. 189 - 205

Published: Feb. 27, 2018

Language: Английский

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Construction of Direct Z-Scheme AgI/Bi₂Sn₂O₇ Nanojunction System with Enhanced Photocatalytic Activity: Accelerated Interfacial Charge Transfer Induced Efficient Cr(VI) Reduction, Tetracycline Degradation and Escherichia coli Inactivation

ACS Sustainable Chemistry & Engineering, Journal Year: 2018, Volume and Issue: 6(6), P. 8003 - 8018

Published: May 7, 2018

The exploration of highly efficient visible light driven photocatalysts for diverse pollutants removal has received great concerns in wastewater treatment. Here, a series tightly connected AgI/Bi2Sn2O7 nanocomposites were fabricated through an situ deposition–precipitation route. resulting exhibited superior photocatalytic performance Cr(VI) reduction, tetracycline (TC) degradation as well Escherichia coli (E. coli) inactivation. It was found that AB-31.97 nanocomposite displayed optimal under irradiation, i.e., nearly 100% reduction and 7.48-log inactivation E. cells. As TC, the overall process reflected by three-dimensional excitation–emission matrix fluorescence spectra (3D EEMs), detailed pathways proposed LC-MS system. promoted obtained can be attributed to formed nanojunction structure between AgI Bi2Sn2O7, which not only accelerates interfacial charge transfer efficiency but also preserves strong redox ability photogenerated electrons holes. Meanwhile, cycling experiments inductively coupled plasma mass spectroscopy (ICP-MS) measurement manifested presented outstanding photostability. According results radical trapping electron spin resonance (ESR) detection, h+, e–, ·O2– ·OH all involved reaction. Based on experimental results, plausible Z-scheme mechanism put forward. This work provides deep insight into multiapplication highlights facile way construct

Language: Английский

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