Frontiers of Optoelectronics >
BiOI/WO3 photoanode with enhanced photoelectrochemical water splitting activity
Received date: 17 May 2018
Accepted date: 20 Jun 2018
Published date: 21 Dec 2018
Copyright
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.
Key words: photoelectrochemistry; WO3; BiOI; water splitting
Weina SHI , Xiaowei LV , Yan SHEN . BiOI/WO3 photoanode with enhanced photoelectrochemical water splitting activity[J]. Frontiers of Optoelectronics, 2018 , 11(4) : 367 -374 . DOI: 10.1007/s12200-018-0835-8
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