Solar hydrogen generation from seawater with a modified BiVO4 photoanode

Wenjun Luo; Zaisan Yang; Zhaosheng Li; Jiyuan Zhang; Jianguo Liu; Zongyan Zhao; Zhiqiang Wang; Shicheng Yan; Tao Yu; Zhigang Zou

doi:10.1039/C1EE01812D

Solar hydrogen generation from seawater with a modified BiVO₄ photoanode†

Wenjun Luo,^a Zaisan Yang,^a Zhaosheng Li,*^a Jiyuan Zhang,^a Jianguo Liu,^a Zongyan Zhao,^a Zhiqiang Wang,^a Shicheng Yan,^a Tao Yu^a and Zhigang Zou*^a

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* Corresponding authors

^a Ecomaterials and Renewable Energy Research Center (ERERC), Nanjing National Laboratory of Microstructures, and College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing, P. R. China
E-mail: zsli@nju.edu.cn, zgzou@nju.edu.cn
Fax: +86-25-8368-6632
Tel: +86-25-8368-6630

Abstract

Hydrogen is a very promising candidate as a future energy carrier. It is attractive to produce hydrogen from solar energy and seawater, the most abundant renewable energy source and the most abundant natural resource on the earth. To date, there is no report on a stable photoelectrode with a high incident photon conversion efficiency (IPCE) in seawater splitting under irradiation by visible light. Herein, we report an efficient and stable system for seawater splitting based on a multi-metal oxide BiVO₄ after modification. The results indicated that modified BiVO₄ had a photocurrent density of 2.16 mA cm⁻² at 1.0 V_RHE in natural seawater under AM 1.5G sunlight (1000 W m⁻²) and exhibited the highest IPCE at 1.0 V_RHE in the visible light region of 440–480 nm among all known oxide photoanodes.

Energy & Environmental Science

Solar hydrogen generation from seawater with a modified BiVO₄ photoanode†

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