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https://hdl.handle.net/2440/138866
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Type: | Journal article |
Title: | Directional and Ultrafast Charge Transfer in Oxygen-Vacancy-Rich ZnO@Single-Atom Cobalt Core-Shell Junction for Photo-Fenton-Like Reaction |
Author: | Wu, X.-L. Liu, S. Yan, M. Lin, H. Chen, J. Liu, S. Wang, S. Duan, X. |
Citation: | Angewandte Chemie International Edition, 2023; 62(30):1-11 |
Publisher: | Wiley |
Issue Date: | 2023 |
ISSN: | 1433-7851 1521-3773 |
Statement of Responsibility: | Xi-Lin Wu, Shiang Liu, Yu Li, Minjia Yan, Hongjun Lin, Jianrong Chen, Shoujie Liu, Shaobin Wang, Xiaoguang Duan |
Abstract: | In photosynthesis, solar energy is harvested by photosensitizers, and then, the excited electrons transfer via a Z-scheme mode to enzymatic catalytic centers to trigger redox reactions. Herein, we constructed a core-shell Z-scheme heterojunction of semiconductor@single-atom catalysts (SACs). The oxygen-vacancy-rich ZnO core and single-atom Co-N4 sites supported on nitrogen-rich carbon shell (SA-Co-CN) act as the photosensitizer and the enzyme-mimicking active centers, respectively. Driven by built-in electric field across the heterojunction, photoexcited electrons could rapidly (2 ps) transfer from the n-type ZnO core to the p-type SA-Co-CN shell, finally boosting the catalytic performance of the surface-exposed single-atom Co-N4 sites for peroxymonosulfate (PMS) activation under light irradiation. The synergies between photocatalysis and heterogeneous Fenton-like reaction lead to phenomenally enhanced production of various reactive oxygen species for rapid degradation of various microcontaminants in water. Experimental and theoretical results validate that the interfacial coupling of SA-Co-CN with ZnO greatly facilitates PMS adsorption and activation by reducing the adsorption energy and enhancing the cascade electron transfer processes for the photo-Fenton-like reaction. |
Keywords: | Core–Shell Heterojunction; Fenton-Like Reaction; Interfacial Charge Transfer; Single-Atom Catalysts; Trace Organic Pollutants |
Description: | Published July 2023 |
Rights: | © 2023 The Authors. Angewandte Chemie International Edition published by Wiley-VCHGmbH © 2023 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution Non-Commercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
DOI: | 10.1002/anie.202305639 |
Grant ID: | http://purl.org/au-research/grants/arc/DE210100253 |
Published version: | http://dx.doi.org/10.1002/anie.202305639 |
Appears in Collections: | Chemical Engineering publications |
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hdl_138866.pdf | Published version | 13.74 MB | Adobe PDF | View/Open |
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