Photo-induced self-formation of dual-cocatalysts on semiconductor surface

作     者：Linchao Mu Qiao Zhang Xiaoping Tao Yue Zhao Shengyang Wang Junyan Cui Fengtao Fan Can Li 慕林超;张巧;陶晓萍;赵越;王升扬;崔俊艳;范峰滔;李灿

作者机构：State Key Laboratory of CatalysisDalian National Laboratory for Clean Energyand the Collaborative Innovation Center of Chemistry for Energy Materials(iChEM)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2018年第39卷第11期

页      面：1730-1735页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：中国科学院战略性先导科技专项(XDB17000000) 国家自然科学基金委员会(21761142018) 

主　　题：Photocatalysis Cocatalyst Chemical state Photogenerated charges Self‐formation 

摘      要：Cocatalyst plays key roles in photogenerated charge separation and surface catalytic reactions in ***,it is not clear if the chemical states of cocatalysts changed or remains unchanged under photocatalytic reaction ***,taking NaTaO3 as an example,we systemically investigated the chemical states of nickel‐based cocatalysts during photocatalytic water splitting *** was found that photo‐induced self‐formation of Ni and NiO cocatalyst species take place on the surface of NaTaO3 *** self‐formation of dual‐cocatalysts not only occurs on 26‐facet NaTaO3,but also takes place on a more general 6‐facet *** work clarified that the chemical states of cocatalysts are changing and the redox dual‐cocatalysts are redistributed on the semiconductor surface owing to the reaction induced by photogenerated charges under the condition of photocatalytic reactions.