標題: Plasmon Inducing Effects for Enhanced Photoelectrochemical Water Splitting: X-ray Absorption Approach to Electronic Structures
作者: Chen, Hao Ming
Chen, Chih Kai
Chen, Chih-Jung
Cheng, Liang-Chien
Wu, Pin Chieh
Cheng, Bo Han
Ho, You Zhe
Tseng, Ming Lun
Hsu, Ying-Ya
Chan, Ting-Shan
Lee, Jyh-Fu
Liu, Ru-Shi
Tsai, Din Ping
加速器光源科技與應用學位學程
Master and Ph.D. Program for Science and Technology of Accelrrator Light Source
關鍵字: plasmon;water splitting;X-ray absorption spectroscopy;gold;zinc oxide
公開日期: 1-Aug-2012
摘要: Artificial photosynthesis using semiconductors has been investigated for more than three decades for the purpose of transferring solar energy into chemical fuels. Numerous studies have revealed that the introduction of plasmonic materials into photochemical reaction can substantially enhance the photo response to the solar splitting of water. Until recently, few systematic studies have provided clear evidence concerning how plasmon excitation and which factor dominates the solar splitting of water in photovoltaic devices. This work demonstrates the effects of plasmons upon an Au nanostructure-ZnO nanorods array as a photoanode. Several strategies have been successfully adopted to reveal the mutually independent contributions of various plasmonic effects under solar irradiation. These have clarified that the coupling of hot electrons that are formed by plasmons and the electromagnetic field can effectively increase the probability of a photochemical reaction in the splitting of water. These findings support a new approach to investigating localized plasmon-induced effects and charge separation in photoelectrochemical processes, and solar water splitting was used herein as platform to explore mechanisms of enhancement of surface plasmon resonance.
URI: http://dx.doi.org/10.1021/nn3024877
http://hdl.handle.net/11536/16911
ISSN: 1936-0851
DOI: 10.1021/nn3024877
期刊: ACS NANO
Volume: 6
Issue: 8
起始頁: 7362
結束頁: 7372
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