Directional and Ultrafast Charge Transfer in Oxygen‐Vacancy‐Rich ZnO@Single‐Atom Cobalt Core‐Shell Junction for Photo‐Fenton‐Like Reaction

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(30)

Опубликована: Май 31, 2023

In photosynthesis, solar energy is harvested by photosensitizers, and then, the excited electrons transfer via a Z-Scheme mode to enzymatic catalytic centers trigger redox reactions. Herein, we constructed core-shell Z-scheme heterojunction of semiconductor@single-atom catalysts (SACs). The oxygen-vacancy-rich ZnO core single-atom Co-N4 sites supported on nitrogen-rich carbon shell (SA-Co-CN) act as photosensitizer enzyme-mimicking active centers, respectively. Driven built-in electric field across heterojunction, photoexcited could rapidly (2 ps) from n-type p-type SA-Co-CN shell, finally boosting performance surface-exposed for peroxymonosulfate (PMS) activation under light irradiation. synergies between photocatalysis heterogeneous Fenton-like reaction lead phenomenally enhanced production various reactive oxygen species rapid degradation microcontaminants in water. Experimental theoretical results validate that interfacial coupling with greatly facilitates PMS adsorption reducing enhancing cascade electron processes photo-Fenton-like reaction.

Язык: Английский

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Directional and Ultrafast Charge Transfer in Oxygen‐Vacancy‐Rich ZnO@Single‐Atom Cobalt Core‐Shell Junction for Photo‐Fenton‐Like Reaction

Angewandte Chemie, Год журнала: 2023, Номер 135(30)

Опубликована: Май 31, 2023

Abstract In photosynthesis, solar energy is harvested by photosensitizers, and then, the excited electrons transfer via a Z‐Scheme mode to enzymatic catalytic centers trigger redox reactions. Herein, we constructed core–shell Z‐scheme heterojunction of semiconductor@single‐atom catalysts (SACs). The oxygen‐vacancy‐rich ZnO core single‐atom Co−N 4 sites supported on nitrogen‐rich carbon shell (SA‐Co‐CN) act as photosensitizer enzyme‐mimicking active centers, respectively. Driven built‐in electric field across heterojunction, photoexcited could rapidly (2 ps) from n ‐type p SA‐Co‐CN shell, finally boosting performance surface‐exposed for peroxymonosulfate (PMS) activation under light irradiation. synergies between photocatalysis heterogeneous Fenton‐like reaction lead phenomenally enhanced production various reactive oxygen species rapid degradation microcontaminants in water. Experimental theoretical results validate that interfacial coupling with greatly facilitates PMS adsorption reducing enhancing cascade electron processes photo‐Fenton‐like reaction.

Язык: Английский

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Modulating Charge Accumulation via Electron Interaction for Photocatalytic Hydrogen Evolution: A Case of Fabricating Palladium Sites on ZnIn₂S₄ Nanosheets

ACS Catalysis, Год журнала: 2023, Номер 13(17), С. 11687 - 11696

Опубликована: Авг. 21, 2023

It is desirable to regulate charge migration synergistically via atomic level decoration because it can construct active sites with both thermodynamic and kinetic advantages in photocatalytic hydrogen (H2) evolution. Here, a mild cation exchange-mediated strategy was applied anchor palladium (Pd) cations the ZnIn2S4 nanostructure, achieving an outstanding H2 evolution rate of 1236.4 μmol h–1 (λ ≥ 420 nm) accompanied by apparent quantum efficiency 60.06% = nm). Pd dopants act as surface chemical state modulators, which help balance *H adsorption thermodynamically. More importantly, situ electron spin resonance XPS analysis reveal that synergistic interaction brought Pd–S structure constructs efficient transfer channel, leading more delocalized photocarriers for reaction. A feasible proposed this study improve performance photocatalysts from viewpoint exchange. Simultaneously, verified modulate accumulation at substitution sites, providing substantiation unique insights into electronic modification photocatalysts.

Язык: Английский

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Heterostructuring 2D Co2P nanosheets with 0D CoP via a salt-assisted strategy for boosting hydrogen evolution from ammonia borane hydrolysis

Nano Research, Год журнала: 2023, Номер 16(5), С. 6260 - 6269

Опубликована: Янв. 16, 2023

Язык: Английский

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S-scheme heterojunction photocatalysts based on 2D materials

Materials Today, Год журнала: 2024, Номер unknown

Опубликована: Окт. 1, 2024

Язык: Английский

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The MIL-125(Ti)/Co3O4 towards efficiently removing tetracycline by synergistic adsorption-photocatalysis roles

Materials & Design, Год журнала: 2025, Номер 250, С. 113608 - 113608

Опубликована: Янв. 12, 2025

Язык: Английский

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Fabrication of Co3O4@ZnIn2S4 for photocatalytic hydrogen evolution: Insights into the synergistic mechanism of photothermal effect and heterojunction

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 650, С. 1974 - 1982

Опубликована: Июль 25, 2023

Язык: Английский

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S vacancies engineering ZnIn2S4 nanosheets for boosted photocatalytic hydrogen evolution

International Journal of Hydrogen Energy, Год журнала: 2023, Номер 51, С. 1128 - 1135

Опубликована: Ноя. 17, 2023

Язык: Английский

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CoP₃ Quantum Dots Decorated on CdZnS Nanorods as Z-Scheme p–n Heterojunctions for Photocatalytic H₂ Production

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(7), С. 7122 - 7131

Опубликована: Март 19, 2024

Designing approaches to synthesizing nanostructure photocatalysts is crucial boosting applications in photocatalytic H2 production. Herein, a Z-scheme p–n heterojunction for production was designed and constructed by decorating p-type CoP3 quantum dots on n-type CdZnS nanorods. The flower-like CoP3/CdZnS nanorod assembly benefits from light absorption full contact with the solution. An internal electric field forms at interface of junction, which provides charge transport path efficient migration separation photogenerated charges. In result, hydrogen rate junction 33 times that CdZnS. study provided novel approach synthesis self-assembled nanostructures assemblies have important photocatalysis energy conversion.

Язык: Английский

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Single-atomic activation on ZnIn2S4 basal planes boosts photocatalytic hydrogen evolution

Nano Research, Год журнала: 2024, Номер 17(7), С. 5949 - 5955

Опубликована: Апрель 12, 2024

Язык: Английский

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