TiO_2-SnO_2复合凝胶的结构表征及其吸附与光催化性能研究

STUDIES ON THE ADSORPTION AND PHOTOCATALYSIS ACITIVITIES OF TiO_2-SnO_2 GELS

采用溶胶 -凝胶法制备了TiO2 SnO2 复合凝胶 ,利用XRD、UV、IR谱对其结构进行了表征 ,研究了复合凝胶的组成对水、乙醇、丙酮、氨水蒸气平衡吸附量的影响 ,以苯酚溶液为模拟污染物测定了复合凝胶的光催化降解能力。实验结果表明 ,组成为n(TiO2 )∶SnO2 =80 %∶2 0 %的复合凝胶具有最强的吸附和光催化活性 ,对水蒸气、乙醇。

The TiO 2 SnO 2 gels have been prepared by sol gel method The structures of the gels are characterized by XRD, FT IR and UV spectra The adsorption to the gases of H 2O, C 2H 5OH, acetone and ammonia of the gels have been measured The photocatalytic degradation of phenol under the ultraviolet has been studied The experiments show that the gel has the strongest adsorption and photocatalytic activities when the composition of the gels is n(TiO 2)∶n(SnO 2)=80%∶20%