GU Aotian, TAN Weiyang, LI Zhiying, FU Hao, WANG Peng, GONG Chunhui, YANG Yi

(School of Environmental and Biological Engineering; Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse,Nanjing University of Science and Technology，Nanjing 210094, China)

Abstract: Ag-ZIF-8(Zn-CO)multi metal MOFs was prepared by double-solvent method and applied to the catalytic reduction pollutants of p-nitrophenol, o-nitrophenol and p-nitroaniline.The obtained samples were fully characterized by scanning electron microscope(SEM), X-ray diffractometer(XRD)and transmission electron microscope(TEM).The results show that Ag-ZIF-8(Zn-Co)shows excellent catalytic activity in the catalytic degradation of three pollutants.The apparent rate constant and conversion frequency of Ag-ZIF-8(Zn-Co)catalytic degradation of p-nitrophenol are 1.080×10^-3 s^-1 and 2.056 min^-1, respectively，and high catalytic performance is maintained during repeated use.Compared with Ag-ZIF-8 and Ag-ZIF-67, the catalytic activity of Ag-ZIrface area of Ag-ZIF-8(Zn-Co), Zn and Co bimetallic synerF-8(Zn-Co)is significantly improved, which is mainly due to the high specific sugy，and encapsulation of silver nanoparticles by pores.

Keywords: double-solvent method；zeolitic imidazolate framework; nitrophenol; metal organic framework; efficient catalysis

中图分类号：X522                              文献标志码：A

文章编号：1008-5548(2022)01-0015-09

DOI:10.13732/j.issn.1008-5548.2022.01.002

收稿日期： 2021-05-25，修回日期：2021-06-23，在线出版时间：2021-11-16。

基金项目：国家自然科学基金项目，编号：51908240；中央高校基本科研业务费专项资金项目，编号：30921013110；江苏省研究生科研与实践创新计划项目，编号：KYCX20_0332，SJCX20_0114；江苏省凹土资源利用重点实验室开放课题项目：编号 HPK202001。

第一作者简介：顾傲天(1995—)，男，博士研究生，研究方向为环境功能材料。E-mail：490188489@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。