Efficient removal of tetracycline from MOF-on-MOF heterojunctions driven by visible light: Evaluation of photocatalytic mechanisms and degradation pathway

Applied Surface Science, Journal Year: 2023, Volume and Issue: 651, P. 159227 - 159227

Published: Dec. 29, 2023

Language: Английский

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A novel hydrangea-like ZnIn2S4/FePO4 S-scheme heterojunction via internal electric field for boosted photocatalytic H2 evolution

Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 967, P. 171862 - 171862

Published: Aug. 23, 2023

Language: Английский

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Unlocking the unique catalysts of CoTiO3/BiVO4@MIL-Fe(53) for improving Cr(VI) reduction and tetracycline degradation

Carbon Neutrality, Journal Year: 2024, Volume and Issue: 3(1)

Published: June 1, 2024

Abstract Environmental contamination by hexavalent chromium (Cr(VI)) and antibiotic drug residues pose significant challenges to public health ecosystems. This study investigates the application of CoTiO 3 /BiVO 4 @MIL-Fe(53) (CT/BV@Fe-MOF) for reduction Cr(VI) degradation tetracycline (TCL) under visible light. After grafting an iron-based metal–organic framework MIL-Fe(53) on a modified composite, photogenerated electrons could easily be transferred from BiVO /Fe-MOF species via interfacial charge transfer. UV–vis diffuse reflectance spectroscopy showed that carriers were formed in response light absorption. The effect different operating parameters, including catalyst load, pH, initial Cr(VI), TCL concentration, was systematically evaluated during photocatalytic process. CT/BV@Fe-MOF composite exhibited 98.7% efficiency (50 ppm) 97.5% towards (30 within 90 min, resulting greater than pristine , Fe-MOF materials. displayed excellent stability over six cycles, highlighting its potential practical applications. In addition, plausible pathway using LC-ESI/MS analysis, while TEST program utilized investigate toxicity products generated

Language: Английский

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Robust photoelectrocatalytic degradation of antibiotics by organic-inorganic PDISA/Bi2WO6 S-scheme heterojunction membrane

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(2), P. 112328 - 112328

Published: Feb. 25, 2024

Language: Английский

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Anthraquinones-based photocatalysis: A comprehensive review

Environmental Science and Ecotechnology, Journal Year: 2024, Volume and Issue: 22, P. 100449 - 100449

Published: July 5, 2024

In recent years, there has been significant interest in photocatalytic technologies utilizing semiconductors and photosensitizers responsive to solar light, owing their potential for energy environmental applications. Current efforts are focused on enhancing existing photocatalysts developing new ones tailored uses. Anthraquinones (AQs) serve as redox-active electron transfer mediators photochemically active organic photosensitizers, effectively addressing common issues such low light utilization carrier separation efficiency found conventional semiconductors. AQs offer advantages abundant raw materials, controlled preparation, excellent capabilities, photosensitivity, with applications spanning the energy, medical, sectors. Despite utility, comprehensive reviews AQs-based systems contexts lacking. this review, we thoroughly describe photochemical properties of photocatalysis, particularly key challenges like clean production, antibacterial action, pollutant degradation. However, face limitations practical due electrical conductivity solubility-related secondary contamination. To mitigate these issues, design synthesis graphene-immobilized highlighted a solution enhance Additionally, future research directions proposed deepen understanding AQs' theoretical mechanisms provide wastewater treatment. This review aims facilitate mechanistic studies improve technologies.

Language: Английский

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Multiple effects of nano-carbon coating on mediating Schottky barrier height, inhibiting Ti3C2 oxidation and elevating photocatalytic activity in BiOBr/carbon-coated Ti3C2/exfoliated bentonite

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 480, P. 148252 - 148252

Published: Dec. 22, 2023

Language: Английский

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BiPO4/Ov-BiOBr High-Low Junctions for Efficient Visible Light Photocatalytic Performance for Tetracycline Degradation and H2O2 Production

Catalysts, Journal Year: 2023, Volume and Issue: 13(3), P. 634 - 634

Published: March 22, 2023

Through a two-step solvothermal method, different molar ratios of BiPO4 were grown in situ on the surface oxygen-vacancy-rich BiOBr (Ov-BiOBr), successfully constructing BiPO4/Ov-BiOBr heterojunction composite material. By novel type I high-low junction between semiconductor and Ov-BiOBr, stronger oxidative holes or reductive electrons retained, thereby improving redox performance photocatalyst. The catalyst with 10% content demonstrated highest degradation rate tetracycline (TC), degrading over 95% within 90 min, constant 0.02534 min−1, which is 2.3 times that Ov-BiOBr 22 BiPO4. sample displayed best photocatalytic activity, producing 139 μmol·L−1 H2O2 120 3.6 efficiency 19 This was due to appropriate bandgap matching photo-generated electron transfer channel via Bi-bridge, efficient charge separation. It inferred free radical species ·OH ·O2− played dominant role process. Based experimental theoretical results, possible mechanism proposed.

Language: Английский

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CQDs modified Bi2MoO6/CuS p–n heterojunction photocatalytic efficient degradation of tetracycline

Research on Chemical Intermediates, Journal Year: 2024, Volume and Issue: 50(6), P. 2477 - 2499

Published: May 8, 2024

Language: Английский

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Improving Charge Carrier Separation through S-Scheme-Based 2D–2D WS₂/Sulfur-Doped g-C₃N₄ Heterojunctions for a Superior Photocatalytic O₂ Reduction Reaction

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(15), P. 6360 - 6375

Published: Aug. 1, 2024

Hydrogen peroxide (H2O2) generation via a photocatalytic O2 reduction reaction has been considered an economically efficient and environmentally friendly synthesis method. However, the productivity of H2O2 production is restricted because sluggish kinetics fast recombination photoinduced excitons. Therefore, superior two-dimensional (2D)–2D WS2/sulfur-doped g-C3N4 (WSCN) hybrid material was successfully fabricated to address associated limitations through combination wet impregnation calcination techniques for production. The effective anchoring WS2 nanoplates onto sulfur-doped (SCN) nanosheets facilitates separation excitons with sturdy redox properties, which attributable establishment S-scheme heterojunctions between SCN W–S bonding as substantiated by X-ray photoelectron spectroscopy (XPS) analysis. bond at interface acts bridge charge segregation pathways. Among all, 2.5 WSCN displays exceptional 817 μmol, 7.9- 2.68-fold higher than those pristine SCN, respectively. solar-to-chemical conversion efficiency found be 0.24%, whereas apparent quantum yield estimated 3.19% 420 nm irradiation. improved activity figured out cathodic photocurrent −1.51 mA cm–2 delayed excitons, supported photoluminescence electrochemical impedance measurements. charge-transfer pathway well validated radical scavenging experiment work function, evaluated from VB-XPS analysis in situ XPS measurement. This research offers paradigmatic idea constructing photocatalyst generation.

Language: Английский

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Performance assessment of photo-controlled catalytic and moving biocarrier-based hybrid systems for the treatment of pharmaceuticals from municipal and industrial wastewater: Insights into influencing factors and degradation mechanisms

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(3), P. 110128 - 110128

Published: May 15, 2023

Language: Английский

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