%A Weina SHI, Xiaowei LV, Yan SHEN %T BiOI/WO3 photoanode with enhanced photoelectrochemical water splitting activity %0 Journal Article %D 2018 %J Front. Optoelectron. %J Frontiers of Optoelectronics %@ 2095-2759 %R 10.1007/s12200-018-0835-8 %P 367-374 %V 11 %N 4 %U {https://journal.hep.com.cn/foe/EN/10.1007/s12200-018-0835-8 %8 2018-12-21 %X

This work reports on a novel BiOI/WO3 composite photoanode, which was fabricated by depositing BiOI onto a WO3 nanoflake electrode through a electrodeposition method. The photoelectrochemical (PEC) activity of the BiOI/WO3 electrode for water splitting under visible-light irradiation was evaluated. The results show that the BiOI/WO3 photoanode achieved a photocurrent density of 1.21 mA·cm−2 at 1.23 V vs. reversible hydrogen electrode (RHE), which was higher than that of the bare WO3 nanoflake electrode (0.67 mA·cm−2). The enhanced PEC acticity of BiOI/WO3 for water splitting can be attributed to the expansion of light absorption range as well as the facilitated separation of photo-generated carriers.