纳米In2O3-TiO2光催化膜的表征及降解甲苯研究
Journal Title: Science Paper Online - Year 2007, Vol 2, Issue 7
Abstract
本文采用溶胶－凝胶法制备了纳米In2O3-TiO2复合溶胶，经多次镀膜得到以铝片为载体的纳米In2O3-TiO2复合膜，以空气中的甲苯为模拟污染物，考察了其光催化性能。结果表明，In2O3的复合对TiO2光催化活性起到促进作用，n(In2O3)/n(TiO2)=0.04的复合膜催化剂具有最高的光催化活性，比纯TiO2降解甲苯的效率提高了15%。XRD谱图分析，复合前后的氧化物具有锐钛矿晶相，没有检测到In2O3的特征峰。透射电镜观察到复合膜颗粒为球形，粒径分布比较均匀，平均粒径为19nm。UV-Vis吸收光谱表明纳米In2O3-TiO2复合膜对光波的吸收能力比纯TiO2要强，相应的光降解甲苯的活性提高。
Authors and Affiliations
Junhua Li , Lisi Wei
Keywords
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