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Cerium-Doped Iron Oxide Nanorod Arrays for Photoelectrochemical Water Splitting.

ABSTRACT: In this work, a simple one-step hydrothermal method was employed to prepare the Ce-doped Fe₂O₃ ordered nanorod arrays (CFT). The Ce doping successfully narrowed the band gap of Fe₂O₃, 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 Fe₂O₃ 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 Fe₂O₃ nanorod arrays (FT). The Hydrogen (H₂) production from PEC water splitting of Fe₂O₃ was highly improved by Ce doping to achieve an evolution rate of 21 μmol/cm²/h.

SUBMITTER: Zhao HP

PROVIDER: S-EPMC9780861 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature

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Cerium-Doped Iron Oxide Nanorod Arrays for Photoelectrochemical Water Splitting.

Zhao Hai-Peng HP Zhu Mei-Ling ML Shi Hao-Yan HY Zhou Qian-Qian QQ Chen Rui R Lin Shi-Wei SW Tong Mei-Hong MH Ji Ming-Hao MH Jiang Xia X Liao Chen-Xing CX Chen Yan-Xin YX Lu Can-Zhong CZ

Molecules (Basel, Switzerland) 20221219 24

In this work, a simple one-step hydrothermal method was employed to prepare the Ce-doped Fe2O3 ordered nanorod arrays (CFT). The Ce doping successfully narrowed the band gap of Fe2O3, 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 Fe ...[more]

PMID: 36558179

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