Citation: Ming FANG, Qi QIN, Qian CAI, Wei LIU. Transparent Co₃FeO_x Film Passivated BiVO₄ Photoanode for Efficient Photoelectrochemical Water Splitting[J]. Chinese Journal of Structural Chemistry, ;2021, 40(11): 1505-1512. doi: 10.14102/j.cnki.0254-5861.2011-3162 shu

Transparent Co₃FeO_x Film Passivated BiVO₄ Photoanode for Efficient Photoelectrochemical Water Splitting

Ming FANG ^{a, b} ,
Qi QIN ^b ,
Qian CAI ^b ,
Wei LIU ^b,,

a.
Fujian Normal University, Fuzhou 350007, China
b.
CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterial, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

Corresponding author: Wei LIU, liuw@fjirsm.ac.cn
Received Date: 26 February 2021
Accepted Date: 26 March 2021

Fund Project: the National Natural Science Foundation of China 61674152the National Natural Science Foundation of China 51902309the Natural Science Foundation of Fujian Province 2018J05097

Figures(4)

Photoelectrochemistry that use semiconductors to absorb sunlight for water splitting provides an effective method for the development of renewable hydrogen energy in the future. In this paper, a transparent and highly-efficient cobalt-iron oxide (Co₃FeO_x) nano-film was fabricated through hydrothermal method by directional adjustment of atomic ratio to promote the kinetics of BiVO₄ (BVO) photoanode water oxidation. As a result, the Co₃FeO_x-modified BVO photoanode (Co₃FeO_x/BVO) exhibits an impressive photocurrent density of 4.0 mA·cm^-2 at 1.23 V versus reversible hydrogen electrode (RHE), approximately 2.17-fold higher than that of bare BVO, as well as a cathodically shifted onset potential of 320 mV. Transparent catalyst nanolayer structure is clarified by ultraviolet-visible spectroscopy. In addition, the Co₃FeO_x/BVO photoanode has better stability, and there is no obvious activity degradation after 10 hours of reaction. This strategy provides a broad prospect for the use of water oxidation co-catalyst to achieve effective water splitting.
- photoelectrochemical water splitting,
- bismuth vanadate,
- co-catalyst,
- cobalt-iron oxide
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Transparent Co3FeOx Film Passivated BiVO4 Photoanode for Efficient Photoelectrochemical Water Splitting

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Transparent Co₃FeO_x Film Passivated BiVO₄ Photoanode for Efficient Photoelectrochemical Water Splitting