Anchoring thiol-rich traps in 1D channel wall of metal-organic framework for efficient removal of mercury ions  

作　　者：Xudong Zhao Yuxuan Wang Xinxin Gao Xinli Gao Meihua Wang Hongliang Huang Baosheng Liu 

机构地区：[1]College of Chemical Engineering and Technology,Taiyuan University of Science and Technology,Taiyuan 030024,China [2]Instrumental Analysis Center,Taiyuan University of Science and Technology,Taiyuan 030024,China [3]College of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China [4]State Key Laboratory of Separation Membranes and Membrane Processes,School of Chemical Engineering and Technology,Tiangong University,Tianjin 300387,China

出　　处：《Chinese Chemical Letters》2025年第2期404-407,共4页中国化学快报(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.22208230);Fundamental Research Program of Shanxi Province(No.202103021223281)。

摘　　要：Metal-organic frameworks(MOFs)attract broad interests in mercury(Hg)ion adsorption field,while unreasonable distribution of active groups commonly restricts their utilization efficiency.In this work,we constructed a new MOF(TYUST-6)with dense thiol-rich traps in the 1D pore wall.This accessible channel and rational distribution of thiols allow the smooth diffusion of Hg ions and thereby result in a high Langmuir adsorption capacity of 1347.6 mg/g,almost reaching the theoretical maximum(1444.3 mg/g).Adsorption equilibrium needs 10 and 30 min at the initial concentrations of 10 and 100 mg/L,respectively.Common co-existing ions and solution pH show almost negligible interferences on the adsorption,and adsorbent regeneration can be well achieved.Combining experimental characterizations and theoretical calculations,the thiol groups in the pore wall are proved to be the dominant interaction sites.Thus,this work reports a novel high-capacity adsorbent for Hg^(2+),and proposes a feasible guideline for designing effective adsorbents.

关 键 词：Metal-organic frameworks Thiol groups Mercury ion ADSORPTION Waste water treatment 

分 类 号：X703[环境科学与工程—环境工程] O647.33[理学—物理化学]