文献类型：期刊文献

英文题名：Surface hydrogen bonding can enhance photocatalytic H₂ evolution efficiency

作者：Wang, Xue Lu[1,2];Fang, Wen Qi[1,3];Wang, Hai Feng[4];Zhang, Haimin[2];Zhao, Huijun[2];Yao, Yefeng[5,6];Yang, Hua Gui[1,2]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Griffith Univ, Ctr Clean Environm & Energy, Nathan, Qld 4222, Australia;[3]Griffith Univ, QLD Micro & Nanotechnol Ctr, Nathan, Qld 4111, Australia;[4]E China Univ Sci & Technol, Res Inst Ind Catalysis, Labs Adv Mat, Shanghai 200237, Peoples R China;[5]E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China;[6]E China Normal Univ, Shanghai Key Lab Magnet Resonance, Shanghai 200062, Peoples R China

年份：2013

卷号：1

期号：45

起止页码：14089

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000326465100007)】；

基金：This work was financially supported by the National Natural Science Foundation of China (91022023, 21076076, 20804016, 21174039), SRF for ROCS, SEM, Program 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), and the Australian Research Council's Future Fellowships (FT120100913).

语种：英文

摘要：Hydrogen bonding (H-bond) interactions have been regarded as a topic of vital scientific research in areas ranging from inorganic to biological chemistry. However, the application and elucidation of surface H-bond functionalized photocatalysts and the alteration of the character of the photocatalyst itself have not been paid sufficient attention. Here we show the high efficiency of visible-light-driven photocatalytic H-2 production, achieved by using a surface H-bonding network decorated g-C3N4 photocatalyst. The hydrated g-C3N4 was designed and synthesized by a facile surface treatment in a slightly alkaline environment. According to NMR and theoretical modeling, the H-bonding bridge can effectively shorten the distance between water molecules and g-C3N4, provide multiple channels for the transition between protons and the excited electrons on g-C3N4, stabilize the anionic intermediate and transition states, and restrain charge recombination. The present result opens new opportunities towards a potential approach to designing a new generation of photocatalyst systems.