Ag-TiO_2/CNTs复合材料的制备与表征  

Preparation and Characterization of Ag-TiO_2/CNTs Composite

作　　者：石海洋[1] 王迪[1] 陶颖[1] 

机构地区：[1]开封大学化学工程学院,河南开封475004

出　　处：《河南化工》2012年第11期32-35,共4页Henan Chemical Industry

基　　金：河南省教育厅自然科学研究计划项目(2009C150002)

摘　　要：采用溶胶—凝胶法,并后续在氮气保护下进行高温煅烧制备了负载银的TiO2/CNTs复合材料(记为Ag-TiO2/CNTs);采用XRD、DRS对所得样品的晶体结构、光谱吸收性质进行了表征,以苯酚为模型污染物,评价了样品紫外光光催化降解苯酚的活性。结果表明:银的负载促进了锐钛矿TiO2结晶度的提高,银及碳纳米管能增强TiO2光催化剂在可见光区的吸收能力,并提高了其光催化活性。Ag- TiO2/CNTs composite are synthesized by sol -gel method,then the obtained samples are thermal treated in the hydrogen atmosphere. The crystal structure and optical absorption of the resultant samples are investigated by means of XRD and DRS respectively. UV light photocatalytic activities are studied by photocatalytic decomposition of phenol. The result shows that loading Ag can improve the crys- tallinity of anatase TiO2 , and the synergistic action between Ag and CNTs are beneficial to optical absorp- tion and photocatalytic activity of TiO2.

关 键 词：二氧化钛 碳纳米管 银负载 光催化 苯酚 

分 类 号：TQ134.11[化学工程—无机化工]