TiO_2纳米管的制备及光电催化分解海水制氢  

Preparation of TiO_2 Nanotube Arrays and Its Photoelectrocatalysis Properties of Splitting Seawater into Hydrogen

作　　者：相英[1] 李越湘[1] 彭绍琴[1] 周浪[1] 

机构地区：[1]南昌大学化学系,南昌330031

出　　处：《有色金属（冶炼部分）》2012年第2期42-45,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点基础研究发展规划资助项目(2009CB220003);国家自然科学基金资助项目(20763006);长江学者和创新团队发展计划资助项目(IRT0730);江西省教育厅科技资助项目(GJJ09041)

摘　　要：采用阳极氧化法在钛板表面制备了垂直导向的TiO2纳米管阵列。研究了无机无氟(HCl+H2O2)、无机含氟(HF)和有机乙二醇(EG)三种体系对TiO2纳米管薄膜制备的影响。利用SEM对其形貌进行了表征,通过电化学考察了其光电响应性能。考察了制备的TiO2纳米管薄膜光电催化分解海水制氢性能。结果表明:在EG体系中制备的TiO2纳米管阵列规则有序,有利于光生电子的传输,减小了电子一空穴对的复合,光电催化制氢活性最高。TiO2 nanotube arrays perpendicular to the substrate were fabricated by anodic oxidation in three different electrolytes including fluoride-free inorganic（HCl＋H2O2）,fluoride-inorganic（HF） and fluoride-organic（EG）.The influences of electrolytes on the formation of the tubes were investigated.The morphology of the as-fabricated samples was studied with SEM.The TiO2-NTs were used as photoanodes to photoelectrochemically split artificial seawater into hydrogen.The results show that TiO2-NTs obtained in EG electrolytes have a higher hydrogen evolution activity because of their relatively better surface smoothness and tube orderliness,which are beneficial for electro-hole pairs transporting and the reduction of recombination between them.

关 键 词：TIO2纳米管 光电催化 制氢 

分 类 号：O643[理学—物理化学]