Nitrogen-doped TiO_2 microsheets with enhanced visible light photocatalytic activity for CO_2 reduction

作     者：Maxwell Selase Akple 刘敬祥 秦志扬 S.Wageh Ahmed.A.Al-Ghamdi 余家国 刘升卫 Maxwell Selase Akple;Jingxiang Low;Zhiyang Qin;S. Wageh;Ahmed. A. Al-Ghamdi;Jiaguo Yu;Shengwei Liu

作者机构：武汉理工大学材料复合新技术国家重点实验室湖北武汉430070 霍城理工机械工程系 阿卜杜勒阿齐兹国王大学理学院 

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

年 卷 期：2015年第36卷第12期

页      面：2127-2134页

核心收录：

学科分类：081705[工学-工业催化] 07[理学] 0817[工学-化学工程与技术] 08[工学] 070205[理学-凝聚态物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the National Basic Research Program of China(973 Program 2013CB632402) the National Natural Science Foundation of China(51320105001 51372190 51402025 and 21433007) the Natural Science Foundation of Hubei Province(2015CFA001) the Fundamental Research Funds for the Central Universities(WUT:2014-VII-010) the Self-Determined and Innovative Research Funds of State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology(2013-ZD-1)~~ 

主　　题：Nitrogen self-doping Titania (001) face Surface heterojunction Photocatalytic CO2 reduction 

摘      要：Nitrogen-doped anatase TiO 2 microsheets with 65%（001） and 35%（101） exposed faces were fabricated by the hydrothermal method using TiN as precursor in the presence of HF and HCl. The samples were characterized by scanning electron microscopy,X-ray diffraction,N2 adsorption,X-ray photoelectron spectroscopy,UV-visible spectroscopy,and electrochemical impedance spectroscopy. Their photocatalytic activity was evaluated using the photocatalytic reduction of CO2. The N-doped TiO 2 sample exhibited a much higher visible light photocatalytic activity for CO2 reduction than its precursor TiN and commercial TiO 2（P25）. This was due to the synergistic effect of the formation of surface heterojunctions on the TiO 2 microsheet surface,enhanced visible light absorption by nitrogen-doping,and surface fluorination.