Strong interactions between Au nanoparticles and BiVO4 photoanode boosts hole extraction for photoelectrochemical water splitting
Strong metal-support interaction (SMSI) is widely proposed as a key factor in tuning catalytic performances. Herein, the classical SMSI between Au nanoparticles (NPs) and BiVO4 (BVO) supports (Au/BVO-SMSI) is discovered and used innovatively for photoelectrochemical (PEC) water splitting. Owing to t...
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sg-ntu-dr.10356-1792602024-07-23T08:06:50Z Strong interactions between Au nanoparticles and BiVO4 photoanode boosts hole extraction for photoelectrochemical water splitting He, Bing Cao, Yu Lin, Kaijie Wang, Yang Li, Zhen Yang, Yingkui Zhao, Yanli Liu, Xueqin School of Chemistry, Chemical Engineering and Biotechnology Engineering Bismuth vanadate Photoanode Strong metal-support interaction (SMSI) is widely proposed as a key factor in tuning catalytic performances. Herein, the classical SMSI between Au nanoparticles (NPs) and BiVO4 (BVO) supports (Au/BVO-SMSI) is discovered and used innovatively for photoelectrochemical (PEC) water splitting. Owing to the SMSI, the electrons transfer from V4+ to Au NPs, leading to the formation of electron-rich Au species (Auδ-) and strong electronic interaction (i.e., Auδ--Ov-V4+), which readily contributes to extract photogenerated holes and promote charge separation. Benefitted from the SMSI effect, the as-prepared Au/BVO-SMSI photoanode exhibits a superior photocurrent density of 6.25 mA cm-2 at 1.23 V versus the reversible hydrogen electrode after the deposition of FeOOH/NiOOH cocatalysts. This work provides a pioneering view for extending SMSI effect to bimetal oxide supports for PEC water splitting, and guides the interfacial electronic and geometric structure modulation of photoanodes consisting of metal NPs and reducible oxides for improved solar energy conversion efficiency. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) This work was financially supported by the National Natural Science Foundation of China (52002361, 52003300 and52173091), the Program for Leading Talents of National Ethnic Affairs Commission of China (MZR21001), the Hubei Provincial Natural Science Foundation of China(2021CFA022), and the Wuhan Science and Technology Bureau (2020010601012198). Y. Z. thanks for the support from the Ministry of Education Singapore under its Academic Research Fund (RG2/22 and RG85/22) and the Singapore Agency for Science, Technology and Research(A*STAR) under the Manufacturing, Trade and Connectivity Individual Research Grant (M21K2c0105). 2024-07-23T08:06:50Z 2024-07-23T08:06:50Z 2024 Journal Article He, B., Cao, Y., Lin, K., Wang, Y., Li, Z., Yang, Y., Zhao, Y. & Liu, X. (2024). Strong interactions between Au nanoparticles and BiVO4 photoanode boosts hole extraction for photoelectrochemical water splitting. Angewandte Chemie International Edition, 63(23), e202402435-. https://dx.doi.org/10.1002/anie.202402435 1433-7851 https://hdl.handle.net/10356/179260 10.1002/anie.202402435 38566410 2-s2.0-85191095207 23 63 e202402435 en RG2/22 RG85/22 M21K2c0105 Angewandte Chemie International Edition © 2024 Wiley-VCH GmbH. All rights reserved. |
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Engineering Bismuth vanadate Photoanode He, Bing Cao, Yu Lin, Kaijie Wang, Yang Li, Zhen Yang, Yingkui Zhao, Yanli Liu, Xueqin Strong interactions between Au nanoparticles and BiVO4 photoanode boosts hole extraction for photoelectrochemical water splitting |
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Strong metal-support interaction (SMSI) is widely proposed as a key factor in tuning catalytic performances. Herein, the classical SMSI between Au nanoparticles (NPs) and BiVO4 (BVO) supports (Au/BVO-SMSI) is discovered and used innovatively for photoelectrochemical (PEC) water splitting. Owing to the SMSI, the electrons transfer from V4+ to Au NPs, leading to the formation of electron-rich Au species (Auδ-) and strong electronic interaction (i.e., Auδ--Ov-V4+), which readily contributes to extract photogenerated holes and promote charge separation. Benefitted from the SMSI effect, the as-prepared Au/BVO-SMSI photoanode exhibits a superior photocurrent density of 6.25 mA cm-2 at 1.23 V versus the reversible hydrogen electrode after the deposition of FeOOH/NiOOH cocatalysts. This work provides a pioneering view for extending SMSI effect to bimetal oxide supports for PEC water splitting, and guides the interfacial electronic and geometric structure modulation of photoanodes consisting of metal NPs and reducible oxides for improved solar energy conversion efficiency. |
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School of Chemistry, Chemical Engineering and Biotechnology |
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School of Chemistry, Chemical Engineering and Biotechnology He, Bing Cao, Yu Lin, Kaijie Wang, Yang Li, Zhen Yang, Yingkui Zhao, Yanli Liu, Xueqin |
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Article |
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He, Bing Cao, Yu Lin, Kaijie Wang, Yang Li, Zhen Yang, Yingkui Zhao, Yanli Liu, Xueqin |
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He, Bing |
title |
Strong interactions between Au nanoparticles and BiVO4 photoanode boosts hole extraction for photoelectrochemical water splitting |
title_short |
Strong interactions between Au nanoparticles and BiVO4 photoanode boosts hole extraction for photoelectrochemical water splitting |
title_full |
Strong interactions between Au nanoparticles and BiVO4 photoanode boosts hole extraction for photoelectrochemical water splitting |
title_fullStr |
Strong interactions between Au nanoparticles and BiVO4 photoanode boosts hole extraction for photoelectrochemical water splitting |
title_full_unstemmed |
Strong interactions between Au nanoparticles and BiVO4 photoanode boosts hole extraction for photoelectrochemical water splitting |
title_sort |
strong interactions between au nanoparticles and bivo4 photoanode boosts hole extraction for photoelectrochemical water splitting |
publishDate |
2024 |
url |
https://hdl.handle.net/10356/179260 |
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1806059872529154048 |