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化学进展 2010, Vol. 22 Issue (0203): 291-297 前一篇   后一篇

• 综述与评论 •

修饰型纳米零价铁降解有机卤化物的研究*

邱心泓;方战强**   

  1. （华南师范大学化学与环境学院 广州 510006）
  • 收稿日期:2009-04-13 修回日期:2009-07-09 出版日期:2010-03-24 发布日期:2010-03-18
  • 通讯作者: 方战强 E-mail:zhqfang@scnu.edu.cn
  • 基金资助:

    国家水体污染控制与治理科技重大专项

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Degradation of Halogenated Organic Compounds by Modified Nano Zero-valent Iron

Qiu Xinhong;  Fang Zhanqiang**   

  1. (School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China)
  • Received:2009-04-13 Revised:2009-07-09 Online:2010-03-24 Published:2010-03-18
  • Contact: Fang Zhanqiang E-mail:zhqfang@scnu.edu.cn

纳米零价铁技术由于其独特的性质，已成为国内外研究的热点。对纳米零价铁进行改性，可有效提高其降解效率，解决纳米零价铁易团聚等问题，是解决卤代有机物污染问题行之有效的方法之一，特别适合于土壤和地下水的原位修复。本文从修饰型纳米零价铁的合成方法、制备原理、降解效果、应用范围、降解机理、修饰因素的影响等几方面进行了分析，着重介绍了国内外运用修饰型纳米零价铁降解卤代有机物的研究成果和现状，讨论分析了该技术存在的问题，并对该技术的发展前景进行了展望。

关键词： 纳米零价铁, 有机卤代物, 纳米双金属

Nano zero-valent iron has become a hot research topic in the world for its unique advantages. Modify nano zero-valent iron ,which can effectively improve degradation efficiency for pollutants and control the problem of nanoparticles agglomerates, is one of the effective way to resolve the environment problem caused by the Halogenated organic compounds. It can be particularly used in situ remediation of groundwater and soil contaminated with halogenated organic compounds. In this paper, the preparation methods and applications of modified zero-valent iron nanoparticles are introduced. The capabilities and degradation mechanism of halogenated organic compounds as well as influencing factors are also discussed. The progress in degradation of halogenated organic compounds by modified nano zero-valent iron are illuminated emphatically. At last, future trends and the problems of this technology are prospected.

Contents
1 Introduction
2 Synthesis of modified nano zero-valent iron and theory
3 The advantages of modified nano zero-valent iron
3.1 Application range
3.2 Efficient degradation
4 Mechanism of degradation of halogenated organic compounds by modified nano zero-valent iron and influencing factors
4.1 Mechanism of degradation of halogenated organic compounds
4.2 Reduction pathway and intermediate product
4.3 Influencing factors
5 Prospects

Key words: nano zero-valent iron, halogenated organic compounds, nano bimetal

中图分类号: 

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