摘要
试验考察第一过渡周期元素离子掺杂改性对锐钛型TiO2(ATiO2)光催化降解水中十二烷基苯磺酸钠(DBSNa)效果的影响。结果表明,与未改性样品比较,改性后TiO2光催化活性大部分得到提高,除Cu元素掺杂外,掺杂元素电子亲和势与离子半径的比值(Ea/r)与催化活性之间存在一致性;CuTiO2光催化活性的降低归结于以一价形式存在。
This paper studies the photocatalytic oxidation of DBSNa with transition metal-doped anatase TiO2, and discusses the effect mechanism of doped transition metal and the relationship between the activity and properties of doped ions. The results indicate that, compared with the untreated sample, the modified TiO2 exhibits higher photocatalytic activity, excepting the Cu modified sample. And there is a uniformity between the Ea/r （electron affinity/ionic radius） and photocatalytic activity; the descent in catalytic activity of Cu-TiO2 is due to the existence of Cu^ ＋.
出处
《武汉科技大学学报》
CAS
2006年第1期66-68,共3页
Journal of Wuhan University of Science and Technology
基金
湖北省教育厅重点科研计划资助项目(2002A000109).
关键词
光催化
改性二氧化钛
过渡金属
污水处理
photocatalysis
modified TiO2
transition metal
wastewater treatment
