Effects of cathodic electrodeposition conditions on morphology and photoelectrochemical response of α-Fe2O3 photoanode

α-Fe2O3 photoanodes were prepared on Fluorine-doped tin oxide glass by annealing of electrodeposited Fe films. By controlling the synthesis parameters, the α-Fe2O3 film prepared from the Fe film electrodeposited in 0.05 M ferrous sulfate solution (pH = 2.1) for 50 s and then annealed at 600 °C for 3...

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Bibliographic Details
Published in:Thin solid films 2018-11, Vol.666, p.161-171
Main Authors: Liang, Penghua, Li, Longzhu, Liu, Changhai, Wang, Wenchang, Zhang, Honglei, Mitsuzaki, Naotoshi, Chen, Zhidong
Format: Article
Language:English
Subjects:
Alpha phase ferric oxide
Cathodic electrodeposition
Hematite
Morphology
Photoanode
Water oxidation
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Summary:α-Fe2O3 photoanodes were prepared on Fluorine-doped tin oxide glass by annealing of electrodeposited Fe films. By controlling the synthesis parameters, the α-Fe2O3 film prepared from the Fe film electrodeposited in 0.05 M ferrous sulfate solution (pH = 2.1) for 50 s and then annealed at 600 °C for 3 h has the optimal photocurrent density around 257.08 μA cm−2 at 1.23 V vs. RHE (Reversible Hydrogen Electrode). In this paper, the effects of different synthesis parameters on α-Fe2O3 photoanodes were studied systematically. The morphology and properties of the sample were characterized with scanning electron microscopy, UV–vis spectra, X-ray diffractometry and photoelectrical measurements. •Facile cathodic electrodeposition of α-Fe2O3 photoanodes in acidic solution.•Effects of synthesis parameters on α-Fe2O3 photoanodes systematically studied.•Strong light absorption, low resistance lead to excellent photoelectrochemical performance.
ISSN:0040-6090
1879-2731
DOI:10.1016/j.tsf.2018.09.034