1. Cerium-Doped Iron Oxide Nanorod Arrays for Photoelectrochemical Water Splitting.
- Author
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Zhao, Hai-Peng, Zhu, Mei-Ling, Shi, Hao-Yan, Zhou, Qian-Qian, Chen, Rui, Lin, Shi-Wei, Tong, Mei-Hong, Ji, Ming-Hao, Jiang, Xia, Liao, Chen-Xing, Chen, Yan-Xin, and Lu, Can-Zhong
- Subjects
NANORODS ,IRON oxides ,STANDARD hydrogen electrode ,HYDROGEN production ,BAND gaps ,VISIBLE spectra ,LIGHT absorption ,FERRIC oxide - Abstract
In this work, a simple one-step hydrothermal method was employed to prepare the Ce-doped Fe
2 O3 ordered nanorod arrays (CFT). The Ce doping successfully narrowed the band gap of Fe2 O3 , which improved the visible light absorption performance. In addition, with the help of Ce doping, the recombination of electron/hole pairs was significantly inhibited. The external voltage will make the performance of the Ce-doped sample better. Therefore, the Ce-doped Fe2 O3 has reached superior photoelectrochemical (PEC) performance with a high photocurrent density of 1.47 mA/cm2 at 1.6 V vs. RHE (Reversible Hydrogen Electrode), which is 7.3 times higher than that of pristine Fe2 O3 nanorod arrays (FT). The Hydrogen (H2 ) production from PEC water splitting of Fe2 O3 was highly improved by Ce doping to achieve an evolution rate of 21 μmol/cm2 /h. [ABSTRACT FROM AUTHOR]- Published
- 2022
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