Cu掺杂TiO2及其纳米管的制备、表征与光催化性能  

Preparation, Structure Characterization and Photocatalytic Performance of Cu Doped TiO_2 Nanopowder and Its Corresponding Nanotube

作　　者：王泽高[1] 郑树楠[2] 贾春阳[1] 延卫[2] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,微电子与固体电子学院,成都610054 [2]西安交通大学动力工程多相流国家重点实验室,西安710049

出　　处：《无机化学学报》2010年第5期875-878,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然基金(No.20602005,20873015);电子科技大学青年基金重点项目(No.JX0671);四川省科技厅科技支撑项目(No.2009FZ0230);国家大学生创新实验计划资助

摘　　要：通过溶胶-凝胶法和水热法制备了Cu掺杂TiO2纳米粉末及其纳米管,并通过XRD、TEM、FE-SEM、EDS、UV-Vis/DRS等手段分析了样品的结构。发现以Cu掺杂TiO2纳米粉末为水热反应原料制备的纳米管中不含Cu,对其原因进行了分析讨论并通过Zn掺杂TiO2纳米粉末证实:以金属掺杂TiO2纳米粉末为原料,通过水热法制备TiO2纳米管中不含有相应金属离子,这是由于金属离子在强碱水热条件下形成金属配离子,使金属离子溶解于水中而不能形成金属掺杂TiO2纳米管。对所得样品进行了光催化性能测试,发现:Cu掺杂TiO2粉末的光催化产氢效率为0.75μmol·(g·h)-1,高于由其本身及P25通过水热法制备的TiO2纳米管(分别为:0.42μmol·(g·h)-1,0.25μmol·(g·h)-1)的光催化产氢效率。The Cu doped TiO2 nanopowder and its corresponding nanotube were prepared by sol-gel method and hydrothermal method, respectively. The samples were characterized by XRD, TEM, FE-SEM, EDS, UV-Vis/DRS. When the Cu doped TiO2 nanopowder is used as starting material to prepare the corresponding nanotube by hydrothermal method, there is no Cu element in the nanotube. The mechanism for this result maybe due to the reaction of metal ions with strong alkali under the hydrothermal condition and further dissolution in water, so there is no metal ions doped into the nanotube. The result of Zn doped TiO2 nanopower as starting material to make its corresponding nanotube under the same method also suggests the same mechanism. The photogenerating hydrogen speed of Cu doped TiO2 nanopowder is the highest（0.75 μmol·（g·h）-1） compared with those of the nanotubes （0.42 μmol·（g·h）-1,0.25 μmol·（g·h）-1） from the Cu doped TiO2 nanopowder and P25 nanopowder.

关 键 词：二氧化钛 掺杂 纳米管 光催化 

分 类 号：O614.121[理学—无机化学] O614.411[理学—化学]