Unidirectional suppression of hydrogen oxidation on oxidized platinum clusters

Yu Hang Li, Jun Xing, Zong Jia Chen, Zhen Li, Feng Tian, Li Rong Zheng, Hai Feng Wang (), P. Hu, Hui Jun Zhao and Hua Gui Yang ()
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Yu Hang Li: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology
Jun Xing: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology
Zong Jia Chen: State Key Laboratory of Chemical Engineering, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology
Zhen Li: Institute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong
Feng Tian: School of Materials Science and Engineering, University of Shanghai for Science and Technology
Li Rong Zheng: Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences
Hai Feng Wang: State Key Laboratory of Chemical Engineering, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology
P. Hu: State Key Laboratory of Chemical Engineering, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology
Hui Jun Zhao: Centre for Clean Environment and Energy, Gold Coast Campus, Griffith University
Hua Gui Yang: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology

Nature Communications, 2013, vol. 4, issue 1, 1-7

Abstract: Abstract Solar-driven water splitting to produce hydrogen may be an ideal solution for global energy and environment issues. Among the various photocatalytic systems, platinum has been widely used to co-catalyse the reduction of protons in water for hydrogen evolution. However, the undesirable hydrogen oxidation reaction can also be readily catalysed by metallic platinum, which limits the solar energy conversion efficiency in artificial photosynthesis. Here we report that the unidirectional suppression of hydrogen oxidation in photocatalytic water splitting can be fulfilled by controlling the valence state of platinum; this platinum-based cocatalyst in a higher oxidation state can act as an efficient hydrogen evolution site while suppressing the undesirable hydrogen back-oxidation. The findings in this work may pave the way for developing other high-efficientcy platinum-based catalysts for photocatalysis, photoelectrochemistry, fuel cells and water–gas shift reactions.

Date: 2013
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DOI: 10.1038/ncomms3500

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