TiO_2介孔球的合成及其对双酚A的光催化降解  

Preparation of TiO_2 Mesoporous Spheres and Their photocatalytic Capabilities to Bisphenol A

作　　者：郝玉兰[1] 周延明[2] 刘钊[3] 周立军[2] 李清钊[1] 刘璐[3] 

机构地区：[1]河北联合大学公共卫生学院,河北唐山063000 [2]唐山钢铁集团有限责任公司,河北唐山063000 [3]南开大学环境科学与工程学院,天津300071

出　　处：《化工环保》2012年第3期269-272,共4页Environmental Protection of Chemical Industry

基　　金：唐山市科学技术研究与发展计划项目(08130204A-1-26)

摘　　要：以不同的含钛化合物作为原料,在无模板条件下经一步溶剂热法合成了两种TiO2介孔球——TiO2-1和TiO2-2。对两种TiO2介孔球的形貌进行了表征,结果表明:TiO2-1和TiO2-2粒径分别为5.7 nm和8.0 nm;比表面积分别为159.4 m2/g和128.3 m2/g;孔径约为4.0 nm和5.0 nm。采用P25型TiO2、TiO2-1和TiO2-2对双酚A溶液进行光催化降解反应。在催化剂加入量为0.5 mg/L的条件下降解60 min,双酚A去除率分别为76.3%,99.7%,98.5%。TiO2-1和TiO2-2的光催化效果优于P25型TiO2,且TiO2-1的光催化效果更好。Two kinds of TiO2 mesoporous spheres, TiO2-1 and TIO2-2, were synthetized by one-step solvent-thermal process without template using different titanium-containing compounds as raw materials. The two kinds of TiO2 mesoporous spheres were characterized. The results show that the sizes, specific surface areas, pore sizes of TiO2-1 and TIO2-2 are 5.7 nm and 8.0 nm, 159.4 m2/g and 128.3 m2/g, 4.0 nm and 5.0 nm respectively. The degradation reactions of bisphenol A by photocatalysis with P25-type TiO2, TiO2-1 and TIO2-2 were investigated. The results show that under the conditions of catalyst dosage 0.5 mg/L and degradation time 60 min, the bisphenol A removal rates are 76.3%, 99.7%, 98.5% respectively, which indicates that the photocatalytical effects of TiO2-1 and TIO2-2 are better than that of P25-type TiO2, and that of TiO2-1 is the best.

关 键 词：纳米二氧化钛 介孔材料 光催化 降解 双酚A 废水处理 

分 类 号：X701[环境科学与工程—环境工程]