节点文献
SO42-/TiO2-SiO2的制备及对甲基橙的光催化降解
The Preparation ofSO42-/TiO2-SiO2 and its Photocatalyze Degradation to Methyl Orange
【摘要】 <正> 0 引言 水中难降解有机物的治理已成为当今重要的环境问题,对新型高效水处理剂的需求也愈加迫切。多相光催化氧化已成为国内外治理污水的新技术,但常规二氧化钛半导体光催化剂的量子效率
【Abstract】 The new superacid catalyst SO42- /TiO2-SiO2 is prepared by treating the binary oxide TiO2-SiO2 with 0. 5mol . L-1 sulfuric acid solution. The structure of catalyst is characterized by XRD, IR, XPS, BET, Hammett indicator and the photocatalytic degradation activity of S042 ~ /Ti02-Si02 for methyl orange is tested. The result indicated: That catalysts have superacid property, TiO2 in S042-/Ti02-Si02 is of anatase structure, the specific surface area of catalyst is 299. 308m2, g-1 when calcined at 500C. Compare with TiO2-SiO2, photocatalytic activities of SO42- / Ti02-SiO2 are better.
【关键词】 固体超强酸；
二氧化钛；
光催化氧化；
甲基橙；
【Key words】 solid superacid TiO2 photocatalysis oxidation methyl orange；
【Key words】 solid superacid TiO2 photocatalysis oxidation methyl orange；
【基金】 天津市自然科学基金(No.973606711)
- 【文献出处】 无机化学学报 ,Chinese Journal of Inorganic Chemistry , 编辑部邮箱 ,2003年10期
- 【分类号】O643.3
- 【被引频次】51
- 【下载频次】340