Fe2TiO5 as an Efficient Co-catalyst To Improve the Photoelectrochemical Water Splitting Performance of BiVO4

Fe2TiO5 was synthesized via the solvothermal method and adopted as co-catalyst to improve the photoelectrochemical (PEC) water splitting performance of BiVO4 photoanode. After surface modification by Fe2TiO5, the BiVO4/Fe2TiO5 photoanode shows a 300 mV cathodic shift in onset potential and 3 times e...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2018-11, Vol.10 (46), p.39713-39722
Main Authors: Gao, Yangqin, Li, Yandong, Yang, Guoqing, Li, Songsong, Xiao, Nan, Xu, Boran, Liu, Shuang, Qiu, Ping, Hao, Shijie, Ge, Lei
Format: Article
Language:English
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Summary:Fe2TiO5 was synthesized via the solvothermal method and adopted as co-catalyst to improve the photoelectrochemical (PEC) water splitting performance of BiVO4 photoanode. After surface modification by Fe2TiO5, the BiVO4/Fe2TiO5 photoanode shows a 300 mV cathodic shift in onset potential and 3 times enhancement in photocurrent, which delivers a photocurrent density of 3.2 mA/cm2 at 1.23 V vs reverse hydrogen electrode. Systematic optical, electrochemical, and intensity-modulated photocurrent spectroscopy characterizations were performed to explore the role of Fe2TiO5 and reveal that the enhanced PEC performance is mainly caused by the surface passivation effect of Fe2TiO5.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.8b14141