Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting

Ran, Jingrun, Zhang, Jun, Yu, Jiaguo, Jaroniec, Mietek and Qiao, Shi Zhang (2014) Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting. Chemical Society Reviews, 43 22: 7787-7812. doi:10.1039/c3cs60425j


Author Ran, Jingrun
Zhang, Jun
Yu, Jiaguo
Jaroniec, Mietek
Qiao, Shi Zhang
Title Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting
Journal name Chemical Society Reviews   Check publisher's open access policy
ISSN 0306-0012
1460-4744
Publication date 2014-11-21
Year available 2014
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1039/c3cs60425j
Open Access Status Not yet assessed
Volume 43
Issue 22
Start page 7787
End page 7812
Total pages 26
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
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- and O-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.
Formatted abstract
Photocatalytic water splitting represents a promising strategy for clean, low-cost, and environmental-friendly production of H2 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 H2 and O2 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 H2- and O2-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.
Keyword Chemistry, Multidisciplinary
Chemistry
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID DP1095861
2013CB632402
51320105001
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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