以四氯化钛为前驱体,采用水解沉淀法,在不同的水解温度下,在硅藻土基多孔陶瓷上负载纳米TiO2薄膜,结合XRD和TEM对负载的纳米TiO2粒径进行了表征.对比分析了测试方法及水解温度对纳米TiO2粒径的影响.以罗丹明B为目标降解物,考察了水解温度对光催化剂活性的影响.结果表明:样品经550℃煅烧后,TiO2薄膜为锐钛矿型；水解温度为50℃时TiO2粒径小于水解温度为75℃时所负载纳米TiO2粒径；两种方法所测TiO2粒径有一定差异:dXRD＞dTEM；水解温度为50℃所负载纳米TiO2薄膜,紫外光日300 min,对罗丹明B的去除率为89.9％,而75℃时,样品在紫外光之330 min,对罗丹明B的去除率为78.6％.
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