化工进展 ›› 2020, Vol. 39 ›› Issue (5): 1950-1963.DOI: 10.16085/j.issn.1000-6613.2019-1361

• 资源与环境化工 • 上一篇    下一篇

纳米铁的绿色合成及其在环境中的应用研究进展

刘清1(), 邓真宁1, 滑熠龙2, 招国栋3   

  1. 1.南华大学污染控制与资源化技术湖南省重点实验室,湖南 衡阳 421001
    2.南华大学铀矿冶生物技术国防重点学科实验室,湖南 衡阳 421001
    3.南华大学资源环境与安全工程学院,湖南 衡阳 421001
  • 出版日期:2020-05-05 发布日期:2020-05-25
  • 通讯作者: 刘清
  • 作者简介:刘清(1979—),女,博士,教授,研究方向为污染控制与资源化技术。E-mail:liuqing197901@163.com
  • 基金资助:
    国家自然科学基金青年基金(51304122);土壤污染控制与修复重点实验室项目(2018KJ112)

Green synthesis of Fe nanoparticles and their environmental applications

Qing LIU1(), Zhenning DENG1, Yilong HUA2, Guodong ZHAO3   

  1. 1.Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang 421001, Hunan, China
    2.Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, Hunan, China
    3.School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, Hunan, China
  • Online:2020-05-05 Published:2020-05-25
  • Contact: Qing LIU

摘要:

纳米铁(零价铁及铁氧化物)比表面积大、还原能力强、反应活性高,是一种良好的环境功能材料。传统的纳米铁合成方法中,物理方法对反应所需仪器设备要求较高,化学方法使用的还原剂具有毒性,绿色合成方法能够有效克服传统方法的不足之处。本文首先根据合成途径、纳米铁的类型介绍了利用植物和微生物对纳米零价铁(nZVI)及纳米铁氧化物(IONPs)进行绿色合成的方法,同时论述了制备的纳米铁所表现的特征(如形貌、尺寸、聚集倾向、等电位点)。随后总结了纳米铁通过不同反应机制(吸附、还原、催化氧化)去除环境有机、无机污染物(染料、芳香族化合物、硝酸盐、重金属)的应用。最后指出了纳米铁在绿色合成与实际应用过程中存在的挑战性问题及解决方法,以期为纳米铁今后的深入研究和大规模的工业生产应用提供参考依据。

关键词: 纳米粒子, 纳米零价铁, 铁氧化物, 绿色合成, 环境, 污染

Abstract:

Fe nanoparticles (zero-valent iron and iron oxide) have been regarded as an excellent type of environmental functional material with enormous surface area, outstanding reduction property and high reaction activity. However, in the common synthesis methods of Fe nanoparticles, the physical method usually requires extensive use of equipment for the reaction, and the reducing agent used in the chemical method is toxic, while the green synthesis method can effectively overcome the deficiencies of the conventional method. In this paper, methods were first introduced based on green synthesis of nanoscale zerovalent iron particles (nZVI) and iron oxide nanoparticles (IONPs) by plants and microorganisms in terms of the synthetic route and the type of Fe nanoparticles. Meanwhile, the characteristics (e.g. morphology, size, aggregation tendency, point of zero charges) of the prepared Fe nanoparticles were also discussed. Subsequently, the application of Fe nanoparticles to remove environmental organic and inorganic pollutants (e.g., dyes, aromatic compounds, nitrate, heavy metals) by different reaction mechanisms (adsorption, reduction, catalytic oxidation) was summarized. Finally, the existing challenges in the process of green synthesis and practical application of Fe nanoparticles and their solutions were pointed out, to provide a reference for the future research and large-scale industrial production of Fe nanoparticles.

Key words: nanoparticles, nanoscale zero valent iron (nZVI), iron oxide, green synthesis, environment, pollution

中图分类号: 

京ICP备12046843号-2;京公网安备 11010102001994号
版权所有 © 《化工进展》编辑部
地址:北京市东城区青年湖南街13号 邮编:100011
电子信箱:hgjz@cip.com.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn