Cerium oxide modified iridium nanorods for highly efficient electrochemical water splitting

An Ir/CeO 2 composite catalyst with Ir nanorods (NRs) on amorphous CeO 2 was synthesized through a facile one-pot hydrothermal method, which shows excellent activity towards hydrogen evolution and oxygen evolution in alkaline media, even superior to the performance of commercial Pt/C, IrO 2 and RuO...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2021-09, Vol.57 (7), p.8798-881
Main Authors: Xu, Kai, Zhu, Zizheng, Guo, Wen, Zhang, Hongyan, Yu, Tingting, Wei, Wenxian, Liang, Wenjie, Zhang, Dongen, He, Maoshuai, Yang, Tao
Format: Article
Language:English
Subjects:
Catalysts
Cerium oxides
Chemical evolution
Hydrogen evolution
Iridium
Nanorods
Performance enhancement
Synergistic effect
Water splitting
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Summary:An Ir/CeO 2 composite catalyst with Ir nanorods (NRs) on amorphous CeO 2 was synthesized through a facile one-pot hydrothermal method, which shows excellent activity towards hydrogen evolution and oxygen evolution in alkaline media, even superior to the performance of commercial Pt/C, IrO 2 and RuO 2 catalysts. The enhanced performance could be attributed to the interfacial electron synergistic effect between Ir and CeO 2 . Ir catalytic activities towards electrochemical oxygen evolution and hydrogen generation were greatly enhanced by Ce incorporation through interfacial electron synergism.
ISSN:1359-7345
1364-548X
DOI:10.1039/d1cc02580e