钛掺杂磁铁矿吸附去除水中亚甲基蓝的研究  

Removal of methylene blue by Ti-doped magnetite(Fe_(3-x)Ti_xO_4).

作　　者：杨士建[1,2] 何宏平[1] 吴大清[1] 陈冬[3] 覃宗华[1,2] 袁鹏[1] 朱建喜[1] 

机构地区：[1]中国科学院广州地球化学研究所,广东广州510640 [2]中国科学院研究生院,北京100039 [3]合肥工业大学资源与环境学院,安徽合肥230009

出　　处：《地学前缘》2008年第6期151-154,共4页Earth Science Frontiers

基　　金：国家自然科学基金项目(40773060);国家高技术研究发展计划“863”探索性项目(2006AA03Z337)

摘　　要：用一种新的合成方法在水相中合成了钛磁铁矿(Fe3-xTixO4),并用XRD和FTIR对已合成的Fe3-xTixO4进行了表征。结果表明:合成的Fe3-xTixO4为立方晶系尖晶石结构,样品中的钛离子都已经进入Fe3-xTixO4晶格中,且Fe3-xTixO4表面羟基量随着钛掺杂量的增加而增加。随后,以亚甲基蓝为模拟染料污染物,考察了Fe3-xTixO4的吸附性能。实验表明:钛掺杂能够显著促进Fe3-xTixO4对亚甲基蓝的吸附,吸附反应在0.5h内就能达到吸附平衡。In this study,a series of Fe3-xTixO4（0≤x≤0.78）were synthesized using a novel soft chemical method.The synthetic Fe3-xTixO4 was characterized using XRD and FTIR.The results show that synthetic Fe3-xTixO4 has a spinel structure and Ti was introduced into its structure.The introduction of Ti into magnetite structure increases the amounts of hydroxyl（—OH）on the surface of Fe3-xTixO4.Then,the synthetic Fe3-xTixO4 was used as absorbents for the removal of methylene blue（MB）from solution.The experimental results indicate that with the increase of Ti in Fe3-xTixO4,the absorption of MB on Fe3-xTixO4was promoted remarkably and the absorption reached the equilibrium within 0.5 hour.

关 键 词：Fe3-xTixO4 合成 表征 吸附性能 

分 类 号：X53[环境科学与工程—环境工程]