文献类型：期刊文献

英文题名：Black Tungsten Nitride as a Metallic Photocatalyst for Overall Water Splitting Operable at up to 765 nm

作者：Wang, Yu Lei[1];Nie, Ting[2,3];Li, Yu Hang[1];Wang, Xue Lu[1];Zheng, Li Rong[4];Chen, Ai Ping[1];Gong, Xue Qing[2,3];Yang, Hua Gui[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Adv Mat, Ctr Computat Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Res Inst Ind Catalysis, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

年份：2017

卷号：56

期号：26

起止页码：7430

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20172203719722);WOS:【SCI-EXPANDED(收录号:WOS:000403017000014)】；

基金：This work was financially supported by National Natural Science Foundation of China (21573068, 21421004, and 21603073), SRF for ROCS, SEM, SRFDP, Program of Shanghai Subject Chief Scientist (15XD1501300), Fundamental Research Funds for the Central Universities (222201514303 and 222201714001), China Postdoctoral Science Foundation Funded Project (2016M591615 and 2016M601523), National Postdoctoral Program for Innovative Talents (BX201600050), Shanghai Sailing Program (17YF1402900) and "Chen Guang" project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (16CG31). The authors also thank the crew of 1W1B beamline of Beijing Synchrotron Radiation Facility for the constructive assistance in the XAFS measurements and data analyses.

语种：英文

外文关键词：metallic materials; photocatalysis; red-light-responsive materials; tungsten nitride; water splitting

摘要：Semiconductor photocatalysts are hardly employed for overall water splitting beyond 700 nm, which is due to both thermodynamic aspects and activation barriers. Metallic materials as photocatalysts are known to overcome this limitation through interband transitions for creating electron-hole pairs; however, the application of metallic photocatalysts for overall water splitting has never been fulfilled. Black tungsten nitride is now employed as a metallic photocatalyst for overall water splitting at wavelengths of up to 765 nm. Experimental and theoretical results together confirm that metallic properties play a substantial role in exhibiting photocatalytic activity under red-light irradiation for tungsten nitride. This work represents the first red-light responsive photocatalyst for overall water splitting, and may open a promising venue in searching of metallic materials as efficient photocatalysts for solar energy utilization.