掺Fe^(3+)A-TiO_2的水热法制备及其光催化性能研究  

Peparation of Fe^(3+)-doped Anatase TiO_2 Via Hydrothermal Method and Study on Its Photocatalystic Property

作　　者：张一兵[1] 周天祥[1] 江雷[2] 

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

出　　处：《材料导报》2010年第24期56-58,共3页Materials Reports

基　　金："973"计划项目(2003CB716902);教育部第四批高等学校特色专业建设点建设经费资助项目(TS11524);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：采用水热法以硫酸钛为原料制备了掺Fe3+TiO2粉末,并通过SEM、TEM和XRD测定了样品的形貌和晶型,研究了自制掺Fe3+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(即A-TiO2)。254nm紫外光照射下,用自制掺Fe3+A-TiO2降解甲基橙溶液的最佳条件是:在12mg/L甲基橙溶液中加入0.050g掺5%Fe3+(摩尔分数)的A-TiO2粉末,28℃恒温反应4h,降解率达到62.52%。同样条件下不加A-TiO2时甲基橙自身光解率为16.73%,加入纯A-TiO2时甲基橙降解率为51.75%,而加入掺杂10%Fe3+的A-TiO2其降解率为59.01%。Fe^3＋ -doped TiO2 powders are prepared via hydrothermal method with titanium sulfate as raw material and are characterized by SEM, TEM and XRD. The degeneration of methyl orange photocatalyzed by as-prepared Fe^3＋- doped A-TiO2 powders is studied. Experiment results show that the as-prepared TiO2 crystals are anatase type（ie,A- TiO2）. The best degeneration rate of methyl orange is 62.52% when adding 0. 050g as-prepared 5% Fe3＋ -doped（mole fraction） A-TiO2 powders into the 12mg/L methyl orange solution which adjusted basic hy HNO3 illuminated by UV （λ=254nm）, stirring quickly at 28℃ for 4h. The degeneration rates of methyl orange are 16. 73%, 51. 75% and 59.01% severally photocatalyzed when without adding A-TiO2, adding pure A-TiO2 powders and 10% Fe^3＋-doped A- TiO2 powders at the same condition.

关 键 词：掺Fe3+A-TiO2 光催化 降解 甲基橙 

分 类 号：X131.2[环境科学与工程—环境科学]