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), Год журнала: 2022, Номер 43(2), С. 359 - 369

Опубликована: Янв. 17, 2022

Язык: Английский

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Inorganic Metal‐Oxide Photocatalyst for H₂O₂ Production

Small, Год журнала: 2021, Номер 18(8)

Опубликована: Окт. 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.

Язык: Английский

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Role of oxygen vacancy in metal oxides for photocatalytic CO2 reduction

Applied Catalysis B Environment and Energy, Год журнала: 2022, Номер 321, С. 122079 - 122079

Опубликована: Окт. 17, 2022

Язык: Английский

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

Angewandte Chemie International Edition, Год журнала: 2020, Номер 60(10), С. 5505 - 5511

Опубликована: Дек. 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.

Язык: 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, Год журнала: 2021, Номер 429, С. 132587 - 132587

Опубликована: Сен. 22, 2021

Язык: Английский

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

Applied Catalysis B Environment and Energy, Год журнала: 2021, Номер 295, С. 120286 - 120286

Опубликована: Май 7, 2021

Язык: Английский

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

Nature Communications, Год журнала: 2022, Номер 13(1)

Опубликована: Июнь 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

Язык: Английский

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

Chemical Engineering Journal, Год журнала: 2021, Номер 418, С. 129476 - 129476

Опубликована: Март 24, 2021

Язык: Английский

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Vacancy engineering in nanostructured semiconductors for enhancing photocatalysis

Journal of Materials Chemistry A, Год журнала: 2021, Номер 9(32), С. 17143 - 17172

Опубликована: Янв. 1, 2021

This review highlights the recent impressive progress in vacancy engineering of photocatalysts and discusses outlook on future development vacancy-enhanced photocatalysis.

Язык: Английский

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Oxygen vacancies in Co₃O₄nanoarrays promote nitrate electroreduction for ammonia synthesis

Sustainable Energy & Fuels, Год журнала: 2022, Номер 6(18), С. 4130 - 4136

Опубликована: Янв. 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 − .

Язык: Английский

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