铬掺杂纳米二氧化钛乳液的制备及其光催化性能  

Preparation and photocatalytic properties of the Cr-doped nano-TiO_2 emulsion

作　　者：肖俊莹 许军[2] 武承杰 眭慧东 丁文革[1] 

机构地区：[1]河北大学物理科学与技术学院,河北保定071002 [2]惠州商贸旅游高级职业技术学校机电工程系,广东惠州056025 [3]河北大学电子信息工程学院,河北保定071002

出　　处：《河北大学学报（自然科学版）》2016年第4期353-357,368,共6页Journal of Hebei University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(21201053);高等学校博士学科点专项科研基金新教师类资助课题(20121301120005);河北省自然科学基金资助项目(F2014201078;A2015201050);河北省应用基础研究计划重点基础研究项目(14964306D);河北省教育厅基金资助项目(QN2014057;ZD2016055);河北省大学生创新创业训练计划项目(2015066;2015161;201510075047;026);河北大学学生综合素质培养项目(2015zh0442;2015zh0443);河北大学研究生创新资助项目(X2016065;X2016066);河北大学杰出青年基金资助项目(2015JQ02);河北省研究生创新资助项目(S2016023)

摘　　要：以四氯化钛(TiCl4)、硝酸铬(Cr(NO3)3·6H2O)、D-山梨糖醇、有机羧酸等为主要原材料,采用新技术——络合-控制水解法,在室温下合成铬(Cr)掺杂纳米TiO_2无色透明乳液.分别用XRD、纳米激光粒度分析仪、和紫外-可见分光光度仪等,对样品的物相、粒径、组成、光吸收、光催化等性质进行了表征.结果显示,当Cr的掺杂物质的量比为0.5%,回流时间为15min,pH为6时,所得样品Cr掺杂纳米TiO_2无色透明乳液的光催化性能最好;在光照50min后,其对酸性红3R的降解率最大达96%.Cr-doped nano-TiOz colorless and transparent hydrosol was synthesized by a complexation controlled hydrolysis method at room temperature using TIC14 ,Cr（NO3 ）3 6H2O,D-sorbitol and organic carboxylic acid as raw materials.The phase structure, composition, particle size, absorbance spectrum, and photo-catalysis of samples were characterized by XRD, nano laser particle size analyzer, and ultraviolet-visi- ble spectrophotometer.The results indicated that the Cr-doped nano-TiOz transparent photocatalyst exhib- its optimal photocatalytic performance when the doping content of the amount of ratio substance was 0.5% and the refluxing time was 15 min . The degradation efficiency of acid red 3R dye solution with a concentration of 1 000 mg/L has reached more than 96% after exposed to sunlight for 50 min.

关 键 词：纳米TiO2无色透明乳液 铬掺杂 络合控制水解法 光催化 

分 类 号：TQ613.5[化学工程—精细化工]