TiO2双掺Cr,Sb的光催化性能研究

Photocatalytic Activity of TiO2 Photocatalysts Codoped with Antimony and Chromium

摘要:

采用共沉淀法制备了金属离子双掺杂的TiO2光催化剂,通过XRD,TEM,BET(表面积测定)和DRS(紫外-可见漫反射)测试手段对样品进行分析,以甲基橙为目标污染物对其进行光催化降解.研究结果表明:光催化活性是多种因素协同作用的结果,煅烧温度、掺杂以及样品的光吸收对光催化性能都产生影响.金属离子双掺杂可使光催化剂在可见光区具有光响应,在荧光汞灯激发下,其催化活性优于未掺杂的样品.

Abstract:

TiO2 codoped with antimony and chromium was prepared by coprecipation method. The characters of samples were measured by XRD, TEM, BET and DRS methods. TiO2 codoped with antimony and chromium shows intense absorption bands in the visible light region. Codoped samples are presented with enhanced performance over nondoped samples and TiO2 doped with only antimony.