TiO_2-SBA-15催化剂的制备、表征及光催化降解甲基橙

Preparation,characterization,and photocatalytic degradation of methyl orange of TiO_2-SBA-15

以钛酸四丁酯为钛源,以介孔分子筛SBA-15为载体,采用简单的方法制备TiO2-SBA-15催化剂,并采用FT-IR,XRD和N2吸附-脱附等方法对其进行表征.另外,将制备的TiO2-SBA-15催化剂应用于光催化降解甲基橙溶液,并讨论了钛含量、甲基橙浓度及溶液pH值对降解率的影响.结果表明:在钛酸四丁酯起始加入量为3.2mL,甲基橙浓度为10mg/L,溶液pH=3的条件下,TiO2-SBA-15光催化降解甲基橙的降解率可达到100%.

In this paper,TiO2-SBA-15 catalyst was prepared by simple method using four of butyl titanate as titanium source,the mesoporous molecular sieve SBA-15 as carrier,and the catalysts were characterized by FT-IR,XRD and N2adsorption-desorption method.In addition,the photocatalysis activity of TiO2-SBA-15 was tested by degradation of methyl orange solution.Furthermore,the influence of loading of titanium,methyl orange solution concentration and pH on the degradation rate was discussed.The results showed that photocatalytic degradation of methyl orange degradation rate can reach 100% in the Ti loading amount was 3.2 mL,concentration of methyl orange solution for10mg/L,pH=3.