摘要
本文采用溶胶-凝胶法制备了Fe^(3+)、Ag单掺杂以及Fe^(3+) Ag共掺杂的TiO_2复合材料,采用XRD、SEM研究分析了样品晶体的结构变化和形貌。以甲基橙为光催化反应模型化合物,考察了掺杂对光催化活性的影响。无论是单掺杂还是共掺杂,掺杂后效果明显提高,性能均优于纯TiO_2,特别是共掺杂效果更为明显。根据最后试验共掺杂的最佳比例Fe^(3+)0.1%、Ag0.7%,确定了共掺杂降解环境的最佳pH值。
The Fe^3＋ doped and Ag doped TiO2 were prepared by sol-gel method, and the co-doped of Fe^3＋ and Ag also. The structure and shape of nanoparticles were characterized by XRD, SEM. The photocatalytic activities were evaluated by degradation of methyl orange. The resuits show that not only the single mental doped is more effective than pure TiO2 , but also the mental co-doped especially. The results reveal the optimal co-proportion Fe^3＋0. 1% ,AG0. 7% ,also the optimal pH for the Fe^3＋ and Ag co-doped TiO2 degradation.
出处
《世界科技研究与发展》
CSCD
2009年第3期385-389,共5页
World Sci-Tech R&D
