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Stacking Engineering of Heterojunctions in Half-Metallic Carbon Nitride for Efficient CO2 Photoreduction
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- Zhu, Xingwang (author)
- Yangzhou Univ, Peoples R China
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- Xu, Hangmin (author)
- Yangzhou Univ, Peoples R China
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- Liu, Jinyuan (author)
- City Univ Hong Kong, Peoples R China
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- (creator_code:org_t)
- 2023
- 2023
- English.
- In: Advanced Science. - : WILEY. - 2198-3844.
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Enhancing charge separation in semiconductor photocatalysts is a major challenge for efficient artificial photosynthesis. Herein, a compact heterojunction is designed by embedding half-metallic C(CN)(3) (hm-CN) hydrothermally in BiOBr (BOB) as the backbone. The interface between hm-CN and BOB is seamless and formed by covalent bonding to facilitate the transmission of photoinduced electrons from BOB to hm-CN. The transient photocurrents and electrochemical impedance spectra reveal that the modified composite catalyst exhibits a larger electron transfer rate. The photocatalytic activity of hm-CN/BOB increases significantly as indicated by a CO yield that is about four times higher than that of individual components. Density-functional theory calculations verify that the heterojunction improves electron transport and decreases the reaction energy barrier, thus promoting the overall photocatalytic CO2 conversion efficiency. The half-metal nitride coupled semiconductor heterojunctions might have large potential in artificial photosynthesis and related applications.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
Keyword
- BiOBr; CO2 reduction; half-metallic C(CN)3; heterojunctions; photocatalysis
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Zhu, Xingwang
- Xu, Hangmin
- Liu, Jinyuan
- Bi, Chuanzhou
- Tian, Jianfeng
- Zhong, Kang
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- Wang, Bin
- Ding, Penghui
- Wang, Xiaozhi
- Chu, Paul K.
- Xu, Hui
- Ding, Jianning
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- ENGINEERING AND TECHNOLOGY
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- Advanced Science
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- Linköping University
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