title: Hydrogenated Cagelike Titania Hollow Spherical Photocatalysts for Hydrogen Evolution under Simulated Solar Light Irradiation.
abstract: We synthesized the hydrogenated cagelike TiO2 hollow spheres through a facile sacrificial template method. After the hydrogenation treatment, the disordered surface layer and cagelike pores were generated on the shell of the hollow spheres. The spheres exhibit a high hydrogen evolution rate of 212.7 ± 10.6 μmol h(-1) (20 mg) under the simulated solar light irradiation, which is ∼12 times higher than the hydrogenated TiO2 solid spheres and is ∼9 times higher than the original TiO2 hollow spheres. The high activity results from the unique architectures and hydrogenation. Both the multiple reflection that was improved by the cagelike hollow structures and the red shift of the absorption edge that was induced by hydrogenation can enhance the ultraviolet and visible light absorption. In addition, the high concentration of oxygen vacancies, as well as the hydrogenated disordered surface layer, can improve the efficiency for migration and separation of generated charge carriers.
authors: Collaborative Innovation Center for Chemical Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.|Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.
authors: Yating
authors: Y
authors: Wang
authors: Collaborative Innovation Center for Chemical Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.|Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.
authors: Jinmeng
authors: J
authors: Cai
authors: Collaborative Innovation Center for Chemical Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.|Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.
authors: Moqing
authors: M
authors: Wu
authors: Collaborative Innovation Center for Chemical Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.|Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.
authors: Hao
authors: H
authors: Zhang
authors: Collaborative Innovation Center for Chemical Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.|Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.
authors: Ming
authors: M
authors: Meng
authors: Collaborative Innovation Center for Chemical Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.|Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.
authors: Ye
authors: Y
authors: Tian
authors: Collaborative Innovation Center for Chemical Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.|Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.
authors: Tong
authors: T
authors: Ding
authors: Collaborative Innovation Center for Chemical Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.|Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.
authors: Jinlong
authors: J
authors: Gong
authors: Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences , Shanghai 201204, People's Republic of China.
authors: Zheng
authors: Z
authors: Jiang
authors: Collaborative Innovation Center for Chemical Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.|Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, People's Republic of China.
authors: Xingang
authors: X
authors: Li
keywords: cagelike hollow spheres; hydrogen evolution; hydrogenation; multiple reflection; photocatalysis; water splitting