中文摘要：

环境友好型材料的合成已成为当前研究的热点.纳米零价铁因卓越还原性能应用潜力巨大,纳米铁颗粒的绿色合成技术可避免污染并降低成本,提高修复效率.本文介绍了纳米铁合成工艺的绿色化进展,其中包括采用各类原始材料新型合成方法、合成工艺条件选择和制备产物的生成过程,经济性分析等.另外还比较了纳米铁颗粒绿色分散和负载改性过程中工艺试验参数、收率和选择性等,并对绿色纳米零价铁技术的工程应用和关键问题进行讨论,以及未来发展趋势进行展望.

英文摘要：

Synthesis of environmental friendly materials has become a current hot spot. Due to its remarkable reduction performance, nanoscale zero-valent iron （NZVI） is regarded as one of the most promising nano meterials for application. Green synthesis technology of iron nanoparticles can avoid secondary pollution, reduce costs, and increase removal efficiency of contaminants. In this paper, the latest research progress on green synthesis and modification of nanoscale zero-valent iron is reviewed, including the novel synthesis methods using all kinds of raw materials, selection of synthetic conditions, generation process of the product and economic analysis, etc. In addition, the experimental parameters, the the yield, and selectivity of green modification of nano zero-valent iron particles are compared. Furthermore, the engineering application, key issues and development trend of green NZVI technology are discussed.