Anodized metal oxide nanostructures for photoelectrochemical water splitting

Ying-zhi Chen; Dong-jian Jiang; Zheng-qi Gong; Jing-yuan Li; Lu-ning Wang

doi:10.1007/s12613-020-1983-6

Volume 27 Issue 5

May 2020

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2020 > 27(5): 584-601

Ying-zhi Chen, Dong-jian Jiang, Zheng-qi Gong, Jing-yuan Li, and Lu-ning Wang, Anodized metal oxide nanostructures for photoelectrochemical water splitting, Int. J. Miner. Metall. Mater., 27(2020), No. 5, pp. 584-601. https://doi.org/10.1007/s12613-020-1983-6

Cite this article as:

Ying-zhi Chen, Dong-jian Jiang, Zheng-qi Gong, Jing-yuan Li, and Lu-ning Wang, Anodized metal oxide nanostructures for photoelectrochemical water splitting, Int. J. Miner. Metall. Mater., 27(2020), No. 5, pp. 584-601. https://doi.org/10.1007/s12613-020-1983-6

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Invited Review

Anodized metal oxide nanostructures for photoelectrochemical water splitting

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Corresponding author:
Lu-ning Wang E-mail: luning.wang@ustb.edu.cn
Received: 3 September 2019; Revised: 3 January 2020; Accepted: 6 January 2020; Available online: 8 January 2020

Abstract

Abstract

Photoelectrochemical (PEC) water splitting offers the capability of harvesting, storing, and converting solar energy into clean and sustainable hydrogen energy. Metal oxides are appealing photoelectrode materials because of their easy manufacturing and relatively high stability. In particular, metal oxides prepared by electrochemical anodization are typical of ordered nanostructures, which are beneficial for light harvesting, charge transfer and transport, and the adsorption and desorption of reactive species due to their high specific surface area and rich channels. However, bare anodic oxides still suffer from low charge separation and sunlight absorption efficiencies. Accordingly, many strategies of modifying anodic oxides have been explored and investigated. In this review, we attempt to summarize the recent advances in the rational design and modifications of these oxides from processes before, during, and after anodization. Rational design strategies are thoroughly addressed for each part with an aim to boost overall PEC performance. The ongoing efforts and challenges for future development of practical PEC electrodes are also presented.
- photoelectrochemical water splitting;
- photoelectrode;
- metal oxide;
- anodization;
- nanostructure;
- structural engineering

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