地学前缘 ›› 2008, Vol. 15 ›› Issue (6): 151-154.

• 论文 • 上一篇    下一篇

钛掺杂磁铁矿吸附去除水中亚甲基蓝的研究

  

  1. 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

  • 出版日期:2008-06-20 发布日期:2008-06-20
  • 作者简介:杨士建(1979—),男,工程师,硕士研究生,环境科学专业。Email:yangshijiangsq@163.com
  • 基金资助:

    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)

Removal of methylene blue by Tidoped magnetite (Fe3-xTixO4)

  1. 1Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
    2Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
    3School of Resources & Environmental Engineering, Hefei University of Technology, Hefei 230009, China

  • Online:2008-06-20 Published:2008-06-20

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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5 h内就能达到吸附平衡。

关键词: Fe3-xTixO4;合成;表征;吸附性能

Abstract:

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.

Key words:

Fe3-xTixO4; synthesis; characterization; absorption

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