Formation of multifaceted nano-groove structure on rutile TiO_(2) photoanode for efficient electron-hole separation and water splitting

作     者：Xiaoyi Zhan Yaling Luo Ziyu Wang Yao Xiang Zheng Peng Yong Han Hui Zhang Ruotian Chen Qin Zhou Hongru Peng Hao Huang Weimin Liu Xin Ou Guijun Ma Fengtao Fan Fan Yang Can Li Zhi Liu Xiaoyi Zhan;Yaling Luo;Ziyu Wang;Yao Xiang;Zheng Peng;Yong Han;Hui Zhang;Ruotian Chen;Qin Zhou;Hongru Peng;Hao Huang;Weimin Liu;Xin Ou;Guijun Ma;Fengtao Fan;Fan Yang;Can Li;Zhi Liu

作者机构：State Key Laboratory of Functional Materials for InformaticsShanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China School of Physical Science and TechnologyShanghai Tech UniversityShanghai 201210China State Key Laboratory of CatalysisDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第31卷第2期

页      面：19-25页

核心收录：

学科分类：081702[工学-化学工艺] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：support from the Ministry of Science and Technology of China (No. 2016YFA0202803 and 2018YFA0704503) the National Natural Science Foundation of China (21991152,21991150, 21802096, 21832004, 21902179 and 22072093) the Shanghai-XFEL Beamline Project (SBP) (no. 31011505505885920161A2101001) supported by ME2 project under contract No.11227902 from National Natural Science Foundation of China support of Shanghai Sailing Program (No. 19YF1455600) 

主　　题：TiO_(2)nano-grooves Oxygen vacancies Photoetching Water oxidation 

摘      要：Photoelectrochemical(PEC)water-splitting using solar energy holds great promise for the renewable energy future,and a key challenge in the development of industry viable PEC devices is the unavailability of high-efficient ***,we designed a TiO_(2) model photocatalyst with nano-groove pattern and different surface orientation using low-energy Ar+irradiation and photoetching of TiO_(2),and significantly improved the intrinsic activity for PEC water ***-resolution transmission electron microscopy directly manifests that the grooves consist of highly stepped surface withsteps and *** absorption spectroscopy reveals the groove surface that allows for increased recovery lifetime,which ensures promoted electron-hole separation *** photovoltage directly shows the carrier separation and transportation behaviors,verified by selective photodeposition,demonstrating the groove surface on TiO_(2) contributes to electron-hole *** work proposes an efficient and scalable photoanode strategy,which potentially can open new opportunities for achieving efficient PEC water oxidation performance.