文献类型：期刊文献

英文题名：Unidirectional suppression of hydrogen oxidation on oxidized platinum clusters

作者：Li, Yu Hang[1];Xing, Jun[1];Chen, Zong Jia[2,3];Li, Zhen[4];Tian, Feng[5];Zheng, Li Rong[6];Wang, Hai Feng[2,3];Hu, P.[2,3,7];Zhao, Hui Jun[8];Yang, Hua Gui[1,8]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Ctr Computat Chem, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[4]Univ Wollongong, Australian Inst Innovat Mat, Inst Superconducting & Elect Mat, North Wollongong, NSW 2500, Australia;[5]Shanghai Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200093, Peoples R China;[6]Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China;[7]Queens Univ Belfast, Sch Chem & Chem Engn, Belfast BT9 5AG, Antrim, North Ireland;[8]Griffith Univ, Ctr Clean Environm & Energy, Griffith, NSW 4222, Australia

年份：2013

卷号：4

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000325534900002)】；

基金：P.H. thanks the Chinese Government for the programme of 'Thousands Talents'. H.F.W. acknowledges the National Supercomputer Center in Jinan for computing time. This work was financially supported by National Natural Science Foundation of China (91022023, 21076076), SRF for ROCS, SEM, Programme for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, Major Basic Research Programme of Science and Technology Commission of Shanghai Municipality (10JC1403200), 111 project (B08021) and Australian Research Council's Future Fellowships (FT120100913).

语种：英文

摘要：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.