Efficient water oxidation under visible light by tuning surface defects on ceria nanorods

Zhao, Kun and Qi, Jian and Yin, Huajie and Wang, Zumin and Zhao, Shenlong and Ma, Xiang and Wan, Jiawei and Chang, Lin and Gao, Yan and Yu, Ranbo and Tang, Zhiyong (2015) Efficient water oxidation under visible light by tuning surface defects on ceria nanorods. Journal of Materials Chemistry A, 3 (41). pp. 20465-20470. ISSN 2050-7488

Abstract

Fluorite CeO2 nanorods (NRs) with tunable surface defects are successfully prepared via hydrothermal synthesis followed by post-calcination under different atmospheres. Impressively, the CeO2 NRs obtained under mixed Ar and H2 gas at 800°C exhibit superior catalytic activity towards water oxidation under visible light (λ ≥ 420 nm), which is 10 times higher than that of CeO2 NRs treated under air at 800°C. Detailed characterization and theoretical analysis reveal that the rich surface defects including surface oxygen vacancies and Ce3+ ions are the origin of the enhanced water oxidation performance of the CeO2 NRs treated under the reduced atmosphere.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version not displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 14 Sep 2017 03:46
Last Modified: 14 Sep 2017 03:46
Uncontrolled Keywords: reduced atmosphere; surface oxygen vacancies; visible light; water oxidation; light and optics; nanotechnology; chemical reactions; chemical agents and basic industrial chemicals; solid state physics; crystalline solids; materials science
Fields of Research : 03 Chemical Sciences > 0306 Physical Chemistry (incl. Structural) > 030601 Catalysis and Mechanisms of Reactions
03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030302 Nanochemistry and Supramolecular Chemistry
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Identification Number or DOI: 10.1039/c5ta05817a
URI: http://eprints.usq.edu.au/id/eprint/31945

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