不同基团有机物在二氧化钛上的光催化制氢  

Photocatalytic hydrogen generation of different group organics over TiO_2

作　　者：涂盛辉[1] 梁海营[1] 巫辉[1] 万金保[1] 杜军[1] 

机构地区：[1]南昌大学环境与化学工程学院,江西南昌330031

出　　处：《无机盐工业》2014年第1期65-68,77,共5页Inorganic Chemicals Industry

基　　金：国家自然科学基金项目(51162022)

摘　　要：采用水热法、溶胶凝胶法和光沉积法在氧化锌表面制备花状二氧化钛催化剂,并利用不同结构有机物制氢。结果表明,制备的二氧化钛具有花状形貌,比表面积大且具有良好的产氢性能。通过用不同结构的醇、醛、羧酸、醚、酮、酯、烷烃及芳香族有机物等制氢发现:有机物的结构对制氢活性的影响较大,苯环结构由于其强稳定性难以被裂解而无法产生氢气。总之,分子与催化剂的氢键吸附作用和羟基对分子的植入效率是决定有机物制氢的两个重要因素,决定着产氢效率。Hydrothermal,sol-gel,and photoassisted platinum deposition methods were used to prepare flower-like TiO2 catalysts on ZnO surface.Different structure organics were used to produce hydrogen.Results showed that TiO2 had flower-like morphology ,large specific surface area,and good hydrogen generation performance.Methanol ,formaldehyde ,formic acid, ethers,ketones,esters,alkanes,and aromatic organic compounds had the similar hydrogen generation mechanism.Results showed that/be structure of organics had a great effect on the activity for hydrogen production;because the structure of benzene ring was extremely stable,and it was hard to break apart,it could not to produce hydrogen.All in all,absorption between organic molecules and catalysts, and efficiency of --OH implantation were two most important factors in generating hydrogen, which determined the efficiency of hydrogen generation.

关 键 词：TIO2 光催化 不同结构有机物 制氢 

分 类 号：TQ116.2[化学工程—无机化工] TQ203.2