硅酸盐学报2008，Vol.36Issue(11)：1548-1552,5.
铁离子掺杂磁载TiO2光催化剂的制备及光催化性能
PREPARATION AND PHOTOCATALYTIC PROPERTIES OF Fe (Ⅲ)-DOPED TiO2 MAGNETICALLY SEPARABLE PHOTOCATALYST
摘要
Abstract
Fe(Ⅲ)-doped TiO2/SiO2/Fe3O4 (FTSF) photocatalyst with anatase structure and a particle size range of 10-20nm was syn-thesized by the sol-gel process, and its photocatalytic efficiency was characterized through degradation of 1×10-4 mol/L methyl or-ange solution. The results show that the adsorption capability in the visible region and photocatalytie activity of FTSF samples with suitable Fe (Ⅲ) dopant content can be improved. The FTSF powder sample calcined at 400 ℃ for 3 h and doped with 0.9% (in mole, the same below) Fe (Ⅲ) has the highest photocatalytic efficiency, and its degradation ratio is over 95% for methyl orange solution after ultraviolet light irradiation treatment for 90 min. In addition, more than 98% (in mass) FTSF powder particles can be separated from the solution after degradation treatment using magnetic iron and its photoeatalytic efficiency can be maintained at 80%. It is considered that the FTSF powder doped with 0.9% Fe (Ⅲ) is a promising photocatalyst.关键词
二氧化钛/复合光催化剂/磁性分离/氧化铁Key words
titania/composite photocatalysts/magnetic separation/iron oxide引用本文复制引用
肖信,张敬环,南俊民..铁离子掺杂磁载TiO2光催化剂的制备及光催化性能[J].硅酸盐学报,2008,36(11):1548-1552,5.基金项目
广东省教育厅自然科学基金(05Z008)资助项目. （05Z008）
