文献类型：期刊文献

英文题名：An efficient photocatalyst used in a continuous flow system for hydrogen evolution from water: TiO2 nanotube arrays fabricated on Ti meshes

作者：Zhou, Ruixue[1];Kang, Shi-Zhao[1];Li, Xiangqing[1];Wang, Lei[2];Qin, Lixia[1];Mu, Jin[1]

机构：[1]Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China;[2]E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：5

期号：9

起止页码：6954

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20150300427472);WOS:【SCI-EXPANDED(收录号:WOS:000347410600094)】；

基金：This work was financially supported by the Key Project of Science and Technology Innovation of Shanghai Education Commission (no. 13ZZ135), the Open Project of State Key Laboratory of Supramolecular Structure and Materials (no. sklssm201424) and the National Natural Science Foundation of China (no. 21301118).

语种：英文

外文关键词：Photocatalysts - Yarn - Titanium - Titanium dioxide - Flow velocity - Hydrogen - Anodic oxidation - Platinum - Nanotubes

摘要：In the present work, TiO2 nanotube arrays were fabricated on metallic Ti meshes using anodic oxidation method, and decorated with Pt via electrodeposition. Meanwhile, the application of the TiO2 nanotube arrays loaded with Pt in a continuous flow system was explored as a photocatalyst for H-2 evolution from water. Furthermore, for practical purposes, the photocatalytic H-2 evolution was studied as a function of content of loaded Pt, annealing temperature, anodic oxidation time, and flow velocity. The results indicate that the TiO2 nanotube arrays fabricated on metallic Ti meshes are an efficient photocatalyst which can be used in a continuous flow system for H-2 evolution from water. During the first hour of irradiation, a rate of H-2 evolution of approximately 4.6 L m(-2) h(-1) was achieved under optimal conditions. Moreover, the photocatalytic activity of the TiO2 nanotube arrays fabricated on Ti meshes is obviously higher than that of the TiO2 nanotube arrays fabricated on metallic Ti foils. The rate of H-2 evolution can increase by a factor of 5 when the TiO2 nanotube arrays are fabricated on metallic Ti meshes. Finally, the photocatalytic mechanism was preliminarily discussed.