Integration of 2D layered CdS/WO3 S-scheme heterojunctions and metallic Ti3C2 MXene-based Ohmic junctions for effective photocatalytic H2 generation

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2022, Volume and Issue: 43(2), P. 359 - 369

Published: Jan. 17, 2022

Language: Английский

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Inorganic Metal‐Oxide Photocatalyst for H₂O₂ Production

Small, Journal Year: 2021, Volume and Issue: 18(8)

Published: Oct. 29, 2021

Abstract Hydrogen peroxide (H 2 O ) is a mild but versatile oxidizing agent with extensive applications in bleaching, wastewater purification, medical treatment, and chemical synthesis. The state‐of‐art H production via anthraquinone oxidation hardly considered cost‐efficient environment‐friendly process because it requires high energy input generates hazardous organic wastes. Photocatalytic green, sustainable, inexpensive which only needs water gaseous dioxygen as the raw materials sunlight power source. Inorganic metal oxide semiconductors are good candidates for photocatalytic due to their abundance nature, biocompatibility, exceptional stability, low cost. Progress has been made enhance activity toward production, however, photosynthesis still laboratory research phase since productivity far from satisfaction. To inspire innovative ideas boosting yield photocatalysis, most well‐studied photocatalysts selected modification strategies improve listed. mechanisms over modified discussed highlight facilitating role of methods. Besides, methods quantification associated radical intermediates provided guide future studies this field.

Language: Английский

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Role of oxygen vacancy in metal oxides for photocatalytic CO2 reduction

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 321, P. 122079 - 122079

Published: Oct. 17, 2022

Language: Английский

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Ultrathin Two‐Dimensional Nanostructures: Surface Defects for Morphology‐Driven Enhanced Semiconductor SERS

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 60(10), P. 5505 - 5511

Published: Dec. 1, 2020

Abstract Two‐dimensional (2D) semiconductors have recently become attractive candidate substrates for surface‐enhanced Raman spectroscopy, exhibiting good semiconductor‐based SERS sensing a wider variety of application scenarios. However, the underlying mechanism remains unclear. Herein, we propose that surface defects play vital role in magnification performances 2D semiconductors. As prototype material, ultrathin WO 3 nanosheets is used to demonstrate defect sites and resulting increased charge‐carrier density can induce strong charge‐transfer interactions at substrate‐molecule interface, thereby improving sensitivity substrate by 100 times with high reproducibility. Further work other metal oxides suggests reduced dimension materials be advantageous promoting multiple probe molecules.

Language: Английский

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Enhanced photocatalytic H2 evolution based on a Ti3C2/Zn0.7Cd0.3S/Fe2O3 Ohmic/S-scheme hybrid heterojunction with cascade 2D coupling interfaces

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 429, P. 132587 - 132587

Published: Sept. 22, 2021

Language: Английский

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Pt–CeO2-based composites in environmental catalysis: A review

Applied Catalysis B Environment and Energy, Journal Year: 2021, Volume and Issue: 295, P. 120286 - 120286

Published: May 7, 2021

Language: Английский

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Subsurface oxygen defects electronically interacting with active sites on In2O3 for enhanced photothermocatalytic CO2 reduction

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: June 9, 2022

Abstract Oxygen defects play an important role in many catalytic reactions. Increasing surface oxygen can be done through reduction treatment. However, excessive blocks electron channels and deactivates the catalyst due to electron-trapped effects by subsurface defects. How effectively extract electrons from which cannot directly interact with reactants is challenging remains elusive. Here, we report a metallic In-embedded In 2 O 3 nanoflake over turnover frequency of CO into increases factor 866 (7615 h −1 ) 376 (2990 at same light intensity reaction temperature, respectively, compared . Under electron-delocalization effect O-In-(O)V o -In-In structural units interface, are extracted gather active sites. This improves electronic coupling stabilizes intermediate. The study opens up new insights for exquisite manipulation

Language: Английский

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Spatial distribution of ZnIn2S4 nanosheets on g-C3N4 microtubes promotes photocatalytic CO2 reduction

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 418, P. 129476 - 129476

Published: March 24, 2021

Language: Английский

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Oxygen vacancies in Co₃O₄nanoarrays promote nitrate electroreduction for ammonia synthesis

Sustainable Energy & Fuels, Journal Year: 2022, Volume and Issue: 6(18), P. 4130 - 4136

Published: Jan. 1, 2022

Oxygen vacancy-enriched Co 3 O 4 nanosheet arrays enable ambient electrosynthesis of NH via nitrate reduction, achieving a faradaic efficiency 96.9% and yield 12 157 μg h −1 cm −2 in 0.1 M NaOH with NO − .

Language: Английский

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Engineering interface structures for heterojunction photocatalysts

Physical Chemistry Chemical Physics, Journal Year: 2023, Volume and Issue: 25(6), P. 4388 - 4407

Published: Jan. 1, 2023

Solar photocatalysis is the most ideal solution to global energy concerns and environmental deterioration nowadays. The heterojunction combination has become one of successful effective strategies design manufacture composite photocatalysts. Heterojunction structures are widely documented markedly improve photocatalytic behavior materials by enhancing separation transfer photogenerated charges, widening light absorption range, broadening redox potentials, which attributed presence both build-in electric fields at interface two different complementarity between electron structures. So far, a large number have been reported applied for water splitting, reduction carbon dioxide nitrogen, cleaning, etc. This review outlines recent accomplishments in modification photocatalysts, aiming provide some useful perspectives future research this field.

Language: Английский

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