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本文用溶胶凝胶法制备了纳米Ag+-SO42-/TiO2固体超强酸(AST),采用XRD、FT-IR等方法对AST的结构进行表征,研究AST在紫外光和可见光下降解罗丹明B的光催化活性。结果表明,适宜的制备条件为:Ag+掺杂量为0.5%,硫酸浓度为0.5mol/L,焙烧温度为450℃制备的AST具有较好的光催化活性,且在模拟可见光下AST也具有光催化活性,2h能将罗丹明B几乎完全降解。
In this paper, nano-Ag + -SO42- / TiO2 solid superacid (AST) was prepared by sol-gel method. The structure of AST was characterized by XRD, FT-IR and other methods. The degradation of rhodamine B by AST in UV and visible light Photocatalytic activity. The results showed that the suitable preparation conditions were: Ag + 0.5%, H2SO4 concentration 0.5mol / L, calcination temperature 450 ℃. The prepared AST possesses good photocatalytic activity, and the AST also has light in simulated visible light Catalytic activity, Rhodamine B 2h almost completely degraded.