ZHU Yuqi¹, CHEN Kaiwei¹, ZHANG Jiali¹, CHEN Jiuyu², YANG Yi¹

(1.School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;2.School of Petroleum Engineering, Changzhou University, Changzhou 213164, China)

Abstract: In order to improve the adsorption performance of the materials on radioactive iodide ions in water, metal-copper doped porous carbon(Cu-Zn@C)composites were prepared by calcination using bimetallic Cu-Zn ZIFs as precursors, and characterized by SEM and XRD methods.The results show that the introduction of Cu does not damage the structure of ZIF-8 and the morphology of the material does not change significantly after high temperature carbonization.The introduction of Cu is beneficial to improve the adsorption performance of the porous carbon material for iodine ions.Acidic conditions are favorable to the adsorption of iodine ions by Cu-Zn@C, with an adsorption capacity of 230 mg/g at pH=3.In addition, the adsorption capacity of iodine ions is still high in the presence of a large number of interfering ions.

Keywords: zeolite imidazole skeleton; porous carbon; iodide anion; adsorption

中图分类号：TB333                              文献标志码：A

文章编号：1008-5548(2022)03-0050-09

DOI:10.13732/j.issn.1008-5548.2022.03.016

收稿日期： 2021-11-17， 修回日期：2021-12-15，在线出版时间：2022-05-05。

基金项目：国家自然科学基金项目，编号：11805101、51908240；江苏省自然科学基金项目，编号：BK20181064；中央高校基本科研业务费专项资金项目，编号：30921013110；江苏省凹土重点实验室开放课题项目，编号：HPK202001；江苏省大气环境监测与污染控制高技术研究重点实验室开放课题项目，编号：KHK2004。

第一作者简介：朱玉琦(2001—)，男，研究方向为环境功能材料。E-mail：1023185283@qq.com。

通信作者简介：杨毅(1973—)，男，研究员，博士，博士生导师，研究方向为环境功能材料。E-mail：yangyi@njust.edu.cn。