Citation: Zhifeng Liu, Xue Lu. Multifarious function layers photoanode based on g-C₃N₄ for photoelectrochemical water splitting[J]. Chinese Journal of Catalysis, ;2018, 39(9): 1527-1533. doi: 10.1016/S1872-2067(18)63079-7 shu

Multifarious function layers photoanode based on g-C₃N₄ for photoelectrochemical water splitting

Zhifeng Liu ^a,b, ,
Xue Lu ^b

a Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy, Hubei University of Technology, Wuhan 430068, Hubei, China;
b School of Material Science and Engineering, Tianjin Chengjian University, Tianjin 300384, China

Received Date: 28 February 2018
Revised Date: 15 April 2018

Fund Project: This work was supported by the Science Funds of Tianjin for Distinguished Young Scholar (17JCJQJC44800), Natural Science Foundation of Tianjin (16JCYBJC17900), and Open Foundation of Hubei Collaborative Innovation Center for High-efficient Utilization of Solar Energy (HBSKFZD2017001).

We report on a novel g-C₃N₄/TiO₂/Co-Pi photoanode combining a TiO₂ protection layer, Co-Pi hole capture layer, and g-C₃N₄ light-absorption layer layer for photoelectrochemical (PEC) water splitting to generate hydrogen for the first time. This new photoanode with three function layers exhibits enhanced PEC performance with a photocurrent density of 0.346 mA·cm^-2 at 1.1 V (vs. RHE), which is approximately 3.6 times that of pure g-C₃N₄ photoanode. The enhanced PEC performance of g-C₃N₄/TiO₂/Co-Pi photoanode benefits from the following:(1) excellent visible light absorption of g-C₃N₄; (2) stable protection of TiO₂ to improve the durability of g-C₃N₄film; and (3)photogenerated holes capture Co-Pi to separate photogenerated electron-hole pairs efficiently. This promising multifarious function layers structure provides a new perspective for PEC water splitting to generate hydrogen.
- g-C₃N₄,
- TiO₂,
- Co-Pi,
- Photoanode,
- Photoelectrochemical water splitting
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Multifarious function layers photoanode based on g-C3N4 for photoelectrochemical water splitting

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Multifarious function layers photoanode based on g-C₃N₄ for photoelectrochemical water splitting