文献类型：期刊文献

中文题名：Highly efficient Hg2+ removal via a competitive strategy using a Co-based metal organic framework ZIF-67

作者：Jiacheng Zhou[1];Hao Zhang[1];Tianying Xie[1];Ye Liu[1];Qicheng Shen[1];Jie Yang[1];Limei Cao[1,2];Ji Yang[1,2]

机构：[1]School of Resources and Environmental Engineering,State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process,East China University of Science and Technology,Shanghai 200237,China;[2]Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China

年份：2022

卷号：34

期号：9

起止页码：33

中文期刊名：Journal of Environmental Sciences

外文期刊名：环境科学学报（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2021_2022】；PubMed;

基金：supported by the National Natural Science Foundation of China (Nos. 51778229 , 21307032 );the Fundamental Research Funds for the Central Universities (No. JKB012015019 )。

语种：英文

中文关键词：ZIF-67;Hg2+removal;Coordination competition

摘要：The stronger coordination ability of mercury ions with organic ligands than the metal ions in metal organic framework(MOFs) provides an accessible way to separate mercury ions from solution using specific MOFs. In this study, a Co-based MOF(ZIF-67, Co(mIM)) was synthesized. It did not introduce specific functional groups, such as-SH and-NH, into its structure through complicated steps. It separate Hgfrom wastewater with a new strategy, which utilized the stronger coordination ability of Hgwith the nitrogen atom on the imidazole ring of the organic ligand than the Coions. Hgreplaced Conodes from ZIF-67 and formed a more stable precipitate with m IM. The experimental results showed that this new strategy was efficient. ZIF-67 exhibited Hgadsorption capacity of 1740 mg/g, much higher than the known MOFs sorbents. m IMs is the reaction center and ZIF-67 can improve its utilization. The sample color faded from purple to white due to the loss of cobalt ion. It is a great feature of ZIF-67 that allows users to judge whether the sorbent is deactivated intuitively. ZIF-67 can be sustainable recycled by adding organic ligands to the solution after treatment due to its simple synthesis method at room temperature. It’s a high-efficient and sustainable sorbent for Hgseparation from wastewater.