[2光催化剂的制备和性能'-多元掺杂负载型TiO2光催化剂的制备和性能] 负载光催化剂的蜂窝陶瓷.docx

[2光催化剂的制备和性能'>多元掺杂负载型TiO2光催化剂的制备和性能] 负载光催化剂的蜂窝陶瓷

　　摘 要：为了提升TiO2光催化剂日光催化性能及处理催化剂回收问题，采取微乳液法制备了La3+、Fe3+、Co2+、Ce4+共掺杂TiO2/粉煤灰微珠光催化剂，用紫外-可见分光光度计测定了光催化剂的可见光吸收性能，用能谱仪分析了催化剂的元素含量，以甲基橙为模型污染物考察了催化剂的光催化性能。试验结果表明：掺杂复合粒子在可见光区吸光性能均高于TiO2/漂珠；且多元素掺杂有协同作用，催化剂的吸收边带红移更多，对可见光的吸收也更强。日光照射下，三元共掺杂催化剂的活性≈ 二元共掺杂催化剂的活性>Fe3+、La3+单掺杂催化剂的活性。
　　关键词：共掺杂；负载；TiO2；光催化剂
　　中图分类号：TB332∶O 614 文件标识码：A
　　文章编号：1672-109802-0018-04
　　收稿日期：2021-03-01
　　基金项目：安徽省教育厅自然科学研究基金重大资助项目；淮南市科技专题基金资助项目
　　作者介绍：薛茹君, 女, 教授, 博士, 从事工业催化、纳米材料、矿物加工等方面教学和研究。
　　Study of Preparation and Performance of carried co-doped TiO2 Photocatalyst
　　Xue Ru-jun， Dai Xin-ying， Huang Jing
　　Abstract:Co-doped TiO2／cenosphere photocatalysts with La3+， Fe3+， Co2+， Ce4+ were prepared by microemulsion method. The visible light absorption performances of the co-doped TiO2／cenosphere photocatalysts were investigated by UV-visible spectrophotometer. The content of the finite element of catalysts were analyzed by EDS. The catalytic activity of the photocatalyst was studied with methyl orange as model pollution. The results show that in visible light range the absorption ability of the doped composite particles was better than TiO2／cenosphere. Multi-doping for TiO2／cenosphere has synergism effect. Co-doping makes the red-shift of the absorbing band more and the absorption ability for visible light greater. The sunligh