Bifunctional TiO2/COF S-scheme photocatalyst with enhanced H2O2 production and furoic acid synthesis mechanism

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 333, P. 122780 - 122780

Published: April 25, 2023

Language: Английский

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Oxygen vacancy mediated bismuth-based photocatalysts

Advanced Powder Materials, Journal Year: 2024, Volume and Issue: 3(4), P. 100201 - 100201

Published: April 9, 2024

Sunlight-driven photocatalysis, which can produce clean fuels and mitigate pollutant degradation, has received extensive research attention due to its potential for addressing both energy shortages environmental crises. Bismuth (Bi)-based photocatalysts with broad spectrum solar-light absorption tunable structures, exhibit promising applications in solar-driven photocatalysis. Oxygen vacancy (OV) engineering is a widely recognized strategy that shows great accelerating charge separation small molecule activation. Based on OV engineering, this review focuses Bi-based provides comprehensive overview including synthetic methods, regulation strategies, photocatalytic field. The methods of OVs (BPOVs) are classified into hydrothermal, solvothermal, UV light reduction, calcination, chemical etching, mechanical based different reaction types, provide the possibility structural BPOVs, dimensional regulation, creation, elemental doping, heterojunction fabrication. Furthermore, also highlights CO2 N2 fixation, H2 generation, O2 evolution, cancer therapy, bacteria inactivation. Finally, conclusion prospects toward future development BPOVs presented.

Language: Английский

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The photocatalytic H2O2 production: Design strategies, Photocatalyst advancements, environmental applications and future prospects

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 522, P. 216218 - 216218

Published: Sept. 21, 2024

Language: Английский

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Recent progress in defect‐engineered metal oxides for photocatalytic environmental remediation

Photochemistry and Photobiology, Journal Year: 2024, Volume and Issue: 100(4), P. 830 - 896

Published: May 16, 2024

Rapid industrial advancement over the last few decades has led to an alarming increase in pollution levels ecosystem. Among primary pollutants, harmful organic dyes and pharmaceutical drugs are directly released by industries into water bodies which serves as a major cause of environmental deterioration. This warns severe need find some sustainable strategies overcome these increasing eliminate pollutants before being exposed environment. Photocatalysis is well-established strategy field pollutant degradation various metal oxides have been proven exhibit excellent physicochemical properties makes them potential candidate for remediation. Further, with aim rapid industrialization photocatalytic technology, constant efforts made activity oxides. One such introduction defects lattice parent catalyst through doping or vacancy plays role enhancing catalytic achieving rates. review provides comprehensive analysis their altering material. Various defect-rich like binary oxides, perovskite spinel summarized application degradation. Finally, summary existing research, followed challenges along countermeasures provided pave path future studies this promising field.

Language: Английский

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Charge-transfer dynamics in S-scheme photocatalyst

Nature Reviews Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Language: Английский

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Cd Single Atom as an Electron Mediator in an S‐Scheme Heterojunction for Artificial Photosynthesis of H₂O₂

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Abstract Developing conductor‐mediated S‐scheme heterojunction photocatalysts imitating natural photosynthetic systems emerges as a promising approach to hydrogen peroxide (H 2 O ) production. However, achieving precise coupling between two semiconductors with charge shuttle and modulating the interfacial interactions still remain significant bottleneck. Herein, we propose catalyst architecture Cd single atom mediated formed by interfacing CdS TiO nanoparticles. This exhibits an H production rate high 60.33 µmol g −1 min under UV–vis light irradiation, which is attributed efficient transport at interface of thanks S‐scheme. In‐situ X‐ray photoelectron spectroscopy (XPS) electron spin resonance (ESR) spin‐trapping tests confirm transfer route. Femtosecond transient absorption (fs‐TA) other ex‐situ characterizations further corroborate across interface. work offers new perspective on constructing atoms heterojunctions enhance photocatalytic performance.

Language: Английский

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0D–2D Fe₂O₃/Boron-Doped g-C₃N₄ S-Scheme Exciton Engineering for Photocatalytic H₂O₂ Production and Photo-Fenton Recalcitrant-Pollutant Detoxification: Kinetics, Influencing Factors, and Mechanism

The Journal of Physical Chemistry C, Journal Year: 2022, Volume and Issue: 127(1), P. 22 - 40

Published: Dec. 30, 2022

Step-scheme (S-scheme) heterojunctions comprising two semiconductors having sets of charge carriers at different sites with an outstanding redox capability have emerged as a prospective tactic for H2O2 production and antibiotic remediation. Herein, 0D/2D Fe2O3 QD/B-g-C3N4 (F-BN) was successfully fabricated via in situ nucleation quantum dots (FQDs) over boron-doped g-C3N4 (BCN) sheets photo-Fenton amoxicillin (AMX) degradation. Empirical results demonstrate that the F-BN composite shows superior catalytic activity compared to parent material optimized 3F-BN attains best generation (729 μmol solar-to-chemical conversion efficiency (SCC) 0.12%) AMX degradation (93%) "k" 0.0891 min–1, which is 3.34 7.01 times higher than those pristine materials. The could be attributed effective separation utilization excitons through S-scheme transfer pathway. Moreover, corridor along continuous Fe3+/Fe2+ shuttling responsible activity. Additionally, influence variation experimental conditions also studied detail. high photocurrent, lower EIS semicircle, low PL intensity indicate e–/h+ material. Furthermore, scavenging experiment terephthalic acid (TA), nitro blue tetrazolium chloride (NBT), EPR measurements not only evidence generated reactive oxygen species (•OH •O2–) participated photocatalytic activities but validate charge-transfer mechanism further confirmed from in-situ XPS analysis.

Language: Английский

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Construction of 3D/2D ZnFe2O4/g-C3N4 S-scheme heterojunction for efficient photo-Fenton degradation of tetracycline hydrochloride

Applied Surface Science, Journal Year: 2022, Volume and Issue: 607, P. 155088 - 155088

Published: Sept. 28, 2022

Language: Английский

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Surface Lewis acid sites and oxygen vacancies of Bi2WO6 synergistically promoted photocatalytic degradation of levofloxacin

Applied Surface Science, Journal Year: 2022, Volume and Issue: 605, P. 154822 - 154822

Published: Sept. 7, 2022

Language: Английский

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Iron-tungsten oxides modified oxygen-rich carbon nitride with defects S-scheme heterojunction for boosting photo-Fenton like removal of pollutants

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 451, P. 138629 - 138629

Published: Aug. 13, 2022

Language: Английский

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