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Type: Journal article
Title: Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting
Author: Ran, J.
Zhang, J.
Yu, J.
Jaroniec, M.
Qiao, S.
Citation: Chemical Society Reviews, 2014; 43(22):7787-7812
Publisher: Royal Society of Chemistry
Issue Date: 2014
ISSN: 0306-0012
Statement of
Jingrun Ran, Jun Zhang, Jiaguo Yu, Mietek Jaroniec and Shi Zhang Qiao
Abstract: Photocatalytic water splitting represents a promising strategy for clean, low-cost, and environmental- friendly production of H 2 by utilizing solar energy. There are three crucial steps for the photocatalytic water splitting reaction: solar light harvesting, charge separation and transportation, and the catalytic H 2 and O 2 evolution reactions. While significant achievement has been made in optimizing the first two steps in the photocatalytic process, much less efforts have been put into improving the efficiency of the third step, which demands the utilization of cocatalysts. To date, cocatalysts based on rare and expensive noble metals are still required for achieving reasonable activity in most semiconductor-based photocatalytic systems, which seriously restricts their large-scale application. Therefore, seeking cheap, earth-abundant and high-performance cocatalysts is indispensable to achieve cost-effective and highly efficient photocatalytic water splitting. This review for the first time summarizes all the developed earth-abundant cocatalysts for photocatalytic H 2 -andO 2 -production half reactions as well as overall water splitting. The roles and functional mechanism of the cocatalysts are discussed in detail. Finally, this review is concluded with a summary, and remarks on some challenges and perspectives in this emerging area of research.
Rights: © The Royal Society of Chemistry 2014
RMID: 0030012078
DOI: 10.1039/c3cs60425j
Appears in Collections:Chemical Engineering publications

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