Promising Three-Dimensional Flowerlike CuWO4 Photoanode Modified with CdS and FeOOH for Efficient Photoelectrochemical Water Splitting

This paper describes a novel promising film based on the flowerlike CuWO4 structure, and applied to photoelectrochemical (PEC) water splitting as a photoanode first. The growth mechanism and microstructure of CuWO4 are discussed in detail. The PEC measurements indicate that flowerlike CuWO4 exhibite...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2018-05, Vol.57 (18), p.6210-6217
Main Authors: Zhou, Miao, Liu, Zhihua, Li, Xifei, Liu, Zhifeng
Format: Article
Language:English
Online Access:Get full text
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Summary:This paper describes a novel promising film based on the flowerlike CuWO4 structure, and applied to photoelectrochemical (PEC) water splitting as a photoanode first. The growth mechanism and microstructure of CuWO4 are discussed in detail. The PEC measurements indicate that flowerlike CuWO4 exhibited a photocurrent density of 0.58 mA/cm2 at 0.8 V versus RHE. When coupled with CdS and FeOOH layers, the triple CuWO4/CdS/FeOOH photoanode exhibited further improved PEC performance with a higher photocurrent density of about 2.05 mA/cm2 at 0.8 V versus RHE and excellent operation stability. The remarkable PEC performance stems from several crucial factors: (i) ideal band gap; (ii) improved light absorption; (iii) efficient charge–hole pair separation and collection.
ISSN:0888-5885
1520-5045
DOI:10.1021/acs.iecr.8b00358