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Cerium-Doped Iron Oxide Nanorod Arrays for Photoelectrochemical Water Splitting.
- Source :
- Molecules; Dec2022, Vol. 27 Issue 24, p9050, 13p
- Publication Year :
- 2022
-
Abstract
- In this work, a simple one-step hydrothermal method was employed to prepare the Ce-doped Fe<subscript>2</subscript>O<subscript>3</subscript> ordered nanorod arrays (CFT). The Ce doping successfully narrowed the band gap of Fe<subscript>2</subscript>O<subscript>3</subscript>, 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<subscript>2</subscript>O<subscript>3</subscript> has reached superior photoelectrochemical (PEC) performance with a high photocurrent density of 1.47 mA/cm<superscript>2</superscript> at 1.6 V vs. RHE (Reversible Hydrogen Electrode), which is 7.3 times higher than that of pristine Fe<subscript>2</subscript>O<subscript>3</subscript> nanorod arrays (FT). The Hydrogen (H<subscript>2</subscript>) production from PEC water splitting of Fe<subscript>2</subscript>O<subscript>3</subscript> was highly improved by Ce doping to achieve an evolution rate of 21 μmol/cm<superscript>2</superscript>/h. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14203049
- Volume :
- 27
- Issue :
- 24
- Database :
- Complementary Index
- Journal :
- Molecules
- Publication Type :
- Academic Journal
- Accession number :
- 161040741
- Full Text :
- https://doi.org/10.3390/molecules27249050