掺Fe^(3+)A-TiO_2粉末的水热法制备及其光催化降解甲基橙  

Preparation of Fe^(3+)-doped anatase TiO_2 podwers via hydrothermal method and their photocatalystic degeneration of methyl orange

作　　者：张一兵[1] 郑敏[1] 蒋荣彬[1] 江雷[2] 

机构地区：[1]上饶师范学院,江西上饶334001 [2]中科院化学研究所,北京100080

出　　处：《生态环境学报》2010年第7期1700-1703,共4页Ecology and Environmental Sciences

基　　金：国家"973"计划项目(2003CB716902);江西省教育厅科技资助项目(GJJ09373);江西省高校教学团队资助项目(赣教高字〔2008〕100号)

摘　　要：以硫酸钛为原料用水热法制备了掺Fe3+TiO2粉末,用SEM和XRD测定了样品的形貌和晶型,研究了以自制的掺Fe3+A-TiO2对甲基橙溶液的光催化降解作用。结果表明:所制备的TiO2为锐钛矿型TiO2即A-TiO2。365nm紫外光照射下,用自制的掺Fe3+A-TiO2降解甲基橙溶液的最佳条件是:10mg·L-1的甲基橙溶液中加入0.050g掺5%Fe3+(物质的量比)A-TiO2粉末,用HNO3调节溶液成酸性后,18℃恒温反应4h,降解率达到57.8%。Fe3＋-doped TiO2 powders were prepared by hydrothermal method with titanium sulfate as raw materials and were charac-terized by means of XRD and SEM,and the degeneration of methyl blue photocatalyzed by as-prepared Fe3＋-doped A-TiO2 was studied.Experiment results show that the as-prepared TiO2 crystals are anatase TiO2（ie,A-TiO2）.The best degeneration rate of methyl orange is 57.8% under follow optimum conditions：adding 0.050 g as-prepared 5% Fe^3＋-doped（mole ratio）A-TiO2 powders into the 10 mg·L^-1 methyl orange solution which adjusted acidic by HNO3 illuminated by UV（λ=365 nm）,stirring quickly at 18 ℃ for 4 h.

关 键 词：掺Fe3+A-TiO2粉末 光催化 降解 甲基橙 最佳条件 

分 类 号：X131.2[环境科学与工程—环境科学]