复合TiO_2纳米管材料光催化裂解水产氢研究进展  

Progress of photocatalytic water splitting for hydrogen production over TiO_2 nanotube composite materials

作　　者：梁可心[1] 徐芸菲 许佩瑶[1] 檀玉[1] 张胜寒[1] LIANG Kexin;XU Yunfei;XU Peiyao;TAN Yu;ZHANG Shenghan(Department of Environmental Science and Engineering,North China Electric Power University, Baoding 071003,Hebei,China)

机构地区：[1]华北电力大学环境科学与工程系,河北保定0710003

出　　处：《化工进展》2017年第11期4051-4056,共6页Chemical Industry and Engineering Progress

基　　金：河北省自然科学基金青年基金(E2016502065);中英高校基本科研业务费项目

摘　　要：光催化裂解水是目前制取清洁能源氢气的热点研究方向。本文简述了Ti O_2纳米管及其掺杂改性技术在光催化裂解水制氢领域的发展。分析表明Ti O_2纳米管阵列的表面形貌对光催化产氢的效率方面起着非常重要的作用,采用两步或多步电化学阳极氧化制备的高度规整的Ti O_2纳米管表现出比一步阳极氧化制备的Ti O_2纳米管更高的产氢效率。非金属元素掺杂Ti O_2纳米管、能带宽度减小、染料敏化向Ti O_2纳米管导带注入激发电子,都能促使吸收光红移。掺杂金属离子能有效促使Ti O_2纳米管电子-空穴对分离。Ti O_2纳米管同窄能带的半导体复合使其吸收光红移,同时能有效地分离电子-空穴对。这些方法都能有效提高产氢效率。最后评述了将多种修饰方法有机结合起来制备催化剂是目前裂解水制氢的一个重点研究方向。Photocatalytic splitting water to product the clean hydrogen has become a hot research topic.The progress of TiO2nanotubes and their modification techniques in photocatalytic water splitting for hydrogen production is reviewed.The surface morphologies of TiO2nanotube arrays play a very important role in promoting the efficiency of photocatalytic hydrogen production.The hydrogen production rate of highly structured TiO2nanotube arrays prepared by two-step or multi-step electrochemical anodic oxidation is higher than those prepared by one-step anodic oxidation.Non-metallic elements doped TiO2nanotubes can reduce the energy band gap and the introduction of excited electrons from the sensitized dye into TiO2nanotubes conduction band can make the absorption spectra redshift.Doped metal ions can effectively promote the electron-hole separation rate of TiO2nanotubes.TiO2nanotubes doped with narrow band gap semiconductor compounds can not only make the absorption spectra redshift,but also effectively separate electron-hole pairs.These methods can effectively improve the efficiency of hydrogen production.A research priority of splitting water for hydrogen production can be placed on the combination of multi-methods to dope TiO2nanotubes catalysts.

关 键 词：TIO2纳米管 催化 光化学 裂解水 制氢 

分 类 号：O643[理学—物理化学]