气候变化领域集成服务门户(CCPortal): Efficient photoelectrochemical CO2 conversion for selective acetic acid production

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DOI	10.1016/j.scib.2021.04.004
	Efficient photoelectrochemical CO2 conversion for selective acetic acid production
	Wang X.; Gao C.; Low J.; Mao K.; Duan D.; Chen S.; Ye R.; Qiu Y.; Ma J.; Zheng X.; Long R.; Wu X.; Song L.; Zhu J.; Xiong Y.
发表日期	2021
ISSN	20959273
英文摘要	Amidst the development of photoelectrochemical (PEC) CO2 conversion toward practical application, the production of high-value chemicals beyond C1 compounds under mild conditions is greatly desired yet challenging. Here, through rational PEC device design by combining Au-loaded and N-doped TiO2 plate nanoarray photoanode with Zn-doped Cu2O dark cathode, efficient conversion of CO2 to CH3COOH has been achieved with an outstanding Faradaic efficiency up to 58.1% (91.5% carbon selectivity) at 0.5 V vs. Ag/AgCl. Temperature programmed desorption and in situ Raman spectra reveal that the Zn-dopant in Cu2O plays multiple roles in selective catalytic CO2 conversion, including local electronic structure manipulation and active site modification, which together promote the formation of intermediate CH2/CH3 for C–C coupling. Apart from that, it is also unveiled that the sufficient electron density provided by the Au-loaded and N-doped TiO2 plate nanoarray photoanode plays an equally important role by initiating multi-electron CO2 reduction. This work provides fresh insights into the PEC system design to reach the multi-electron reduction reaction and facilitate the C–C coupling reaction toward high-value multicarbon (C2+) chemical production via CO2 conversion. © 2021 Science China Press
关键词	Acetic acid C2+ chemical CO2 reduction C–C coupling Photoelectrochemical
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207600
作者单位	Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China; Institute of Energy, Hefei Comprehensive National Science Center, Hefei, 230031, China; School of Energy and Environment Science, Anhui University of Technology, Maanshan, 243032, China
推荐引用方式 GB/T 7714	Wang X.,Gao C.,Low J.,et al. Efficient photoelectrochemical CO2 conversion for selective acetic acid production[J],2021.
APA	Wang X..,Gao C..,Low J..,Mao K..,Duan D..,...&Xiong Y..(2021).Efficient photoelectrochemical CO2 conversion for selective acetic acid production.Science Bulletin.
MLA	Wang X.,et al."Efficient photoelectrochemical CO2 conversion for selective acetic acid production".Science Bulletin (2021).