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Progress of in-situ modification techniques of nanoscale zero-valent iron

PANG Long1,ZHOU Qingxiang 1,2,SU Xianfa1   

  1. 1School of Chemistry and Environmental Sciences,Henan Normal University,Henan Key Laboratory for EnvironmentalPollution Control,Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control,Ministry of Education,Xinxiang 453007,Henan,China;2 College of Geosciences,China University of Petroleum Beijing,Beijing 102249,China
  • Online:2011-06-05 Published:2011-06-05

纳米零价铁修饰技术研究进展

庞 龙1,周庆祥1,2,苏现伐1   

  1. 1河南师范大学化学与环境科学学院,河南省环境污染控制重点实验室,黄淮水环境与污染防治教育部重点实验室,河南 新乡 453007;2中国石油大学(北京)地球科学学院,北京 102249

Abstract:

Recently nanoscale zero-valent iron has attracted much more attention in removal of environmental pollutants. The study on the enhancement of remediation ability of nanoscale zero-valent iron and its stability has become the hot topics in related researches. The research demonstrates that the catalysis of the second metal element of prepared bimetallics with nanoscale zero-valent iron would increase the degradation rate of pollutants and the generation rate of hydrogenwhich resulted in enhancing the removal of pollutants. The stability of nanoscale zero-valent iron would be improved and the congregation of nanoscale zero-valent iron would be effectively inhibited by solid materials support or dispersion of surfactant and polyelectrolyte which would increase the degradation efficiency of pollutants. A summary of the progress of modification techniques of nanoscale zero-valent ironand could provide a reference for future research.

摘要:

近年来纳米零价铁在环境污染物去除方面受到了广泛的关注,提高纳米零价铁的修复性能及稳定性是此领域的研究热点,研究发现通过负载金属的催化性能提高对污染物的降解速率及加速零价铁产氢速率,可提高污染物的去除效果。通过固体材料负载或表面活性剂、高分子电解质等分散,可降低纳米零价铁团聚,增纳米零价铁的稳定性,进而提高纳米铁对污染物的降解效率。本文就近些年来纳米零价铁的修饰技术进行综述,作为纳米零价铁后期研究的参考。

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