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 hydrogen，which 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 iron，and 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，增强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。