Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/168576
Title: New Family of Plasmonic Photocatalysts without Noble Metals
Authors: Wan, Dongyang 
Yan, Bixing
Chen, Jianqiang 
Wu, Shuyang
Hong, Jindui
Song, Donasheng 
Zhao, Xiaoxu 
Chi, Xiao 
Zeng, Shengwei 
Huang, Zhen 
Li, Changjian 
Han, Kun 
Zhou, Wenxiong 
Cao, Yu 
Rusydi, Andrivo 
Pennycook, Stephen J. 
Yan, Ping 
Ariando 
Xu, Rong
Xu, Qing-Hua 
Wang, X. Renshaw
Venkatesan, Thirumalai 
Issue Date: 14-Mar-2019
Publisher: American Chemical Society
Citation: Wan, Dongyang, Yan, Bixing, Chen, Jianqiang, Wu, Shuyang, Hong, Jindui, Song, Donasheng, Zhao, Xiaoxu, Chi, Xiao, Zeng, Shengwei, Huang, Zhen, Li, Changjian, Han, Kun, Zhou, Wenxiong, Cao, Yu, Rusydi, Andrivo, Pennycook, Stephen J., Yan, Ping, Ariando, Xu, Rong, Xu, Qing-Hua, Wang, X. Renshaw, Venkatesan, Thirumalai (2019-03-14). New Family of Plasmonic Photocatalysts without Noble Metals. CHEMISTRY OF MATERIALS 31 (7) : 2320 - 2327. ScholarBank@NUS Repository.
Abstract: Efficient photocatalysis is important for sustainable energy. Recently, an unconventional photocatalyst based on intrinsic plasmon, called intrinsic plasmonic photocatalyst (IPP), seems promising for higher efficiency in hydrogen evolution. This catalyst seems to benefit from the advantages of visible light absorption, plasmon-assisted hot carrier generation, and good catalytic stability over conventional semiconductor photocatalysts. In this work, we report the relative hydrogen evolution efficiency under visible light irradiation of a family of IPP based on alkaline earth niobates (MNbO3, where M = Ca, Sr, or Ba), with efficiency of CaNbO3 > SrNbO3 > BaNbO3. The contributions of electron-phonon coupling time constant and solar energy absorption to the hydrogen evolution efficiency are identified as key based on our comprehensive study and characterization of carrier density (1022 cm-3), plasmon absorption, carrier dynamics, and surface area. This study demonstrates a generic approach to create a family of IPPs and further validates the role of solar energy absorption by intrinsic plasmon resonance in the enhancement of photocatalytic efficiency. © 2019 American Chemical Society.
Source Title: CHEMISTRY OF MATERIALS
URI: https://scholarbank.nus.edu.sg/handle/10635/168576
ISSN: 08974756
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