SU Xinyue1, DING Xinxin2, YAN Liangguo1
(1. School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China; 2. Shandong Shenying Environmental Protection Technology Co., Ltd., Jinan 250100, China)
Abstract: Magnetic Fe3O4 nanomaterials show potential application value in some fields, e.g. wastewater treatment, nuclear magnetic resonance imaging, drug delivery, which is due to their unique physical and chemical properties, such as surface interface effect, quantum size effect, electromagnetic property, etc. In this paper, we summarize the preparation method of magnetic Fe3O4 (co-precipitation method, hydrothermal method, solvothermal method, microemulsion method and sol-gel method), evaluate the effect of surface modification or synthetic composites on improving their adsorption and discuss its applications in the removal metal ions, organic pollutants and other contaminants from water. Each synthesis method of magnetic Fe3O4 has advantages. Various modified Fe3O4 and its composites can be obtained according to the characters of preparation methods, such as simple level, particle size distribution and particle dispersion in water. For the applications in wastewater treatment, magnetic Fe3O4 nanomaterials have excellent adsorption performance, strong chemical stability, easy separation and recyclability. However, the research works also have the disadvantages of preparation of materials only in laboratory scale, lack of applications in real wastewater, etc. In the future, in-depth research work should be conducted from the aspects of finding more economical, green and industrialized preparation methods, further improving the adsorption capacity and recovery performance and expanding application fields.
Keywords: Fe3O4; magnetic nanomaterials; adsorption; wastewater treatment
文章编号：1008-5548(2020)06-0001-10
DOI:10.13732/j.issn.1008-5548.2020.06.001
收稿日期： 2020-03-20， 修回日期：2020-04-23，在线出版时间：2020-06-03 11:26。
基金项目：国家自然科学基金项目，编号：21577048。
第一作者简介：苏欣悦(1997—)，女，硕士研究生，研究方向为水污染控制技术。E-mail：809810467@qq.com。
通信作者简介：闫良国(1971—)，男，博士，教授，博士生导师，研究方向为环境功能材料。E-mail：chm_yanlg@ujn.edu.cn。
中图分类号：TB34 文献标志码：A
