A pyrazine based metal-organic framework for selective removal of copper from strongly acidic solutions

作     者：Jiachuang Shao Penghui Shao Mingming Peng Min Li Ziwei Yao Xiuqin Xiong Caiting Qiu Yufan Zheng Liming Yang Xubiao Luo Jiachuang Shao;Penghui Shao;Mingming Peng;Min Li;Ziwei Yao;Xiuqin Xiong;Caiting Qiu;Yufan Zheng;Liming Yang;Xubiao Luo

作者机构：Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNational-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource utilizationNanchang Hangkong UniversityNanchang 330063China Department of Chemical EngineeringChongqing University of Science and TechnologyChongqing 401331China 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2023年第17卷第3期

页      面：75-86页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：the National Natural Science Foundation of China(Nos.52125002 and 51908270) the Natural Science Foundation of Jiangxi Province(No.20212ACB213006),and the National Key Research and Development Program of China(No.2019YFC1907900). 

主　　题：Pyrazine Metal-organic frameworks Copper removal Strong acidity High selectivity 

摘      要：The selective capture of copper from strongly acidic solutions is of vital importance from the perspective of sustainable development and environmental protection.Metal organic frameworks(MOFs)have attracted the interest of many scholars for adsorption due to their fascinating physicochemical characteristics,including adjustable structure,strong stability and porosity.Herein,pz-UiO-66 containing a pyrazine structure is successfully synthesized for the efficient separation of copper from strongly acidic conditions.Selective copper removal at low pH values is accomplished by using this material that is not available in previously reported metal–organic frameworks.Furthermore,the material exhibits excellent adsorption capacity,with a theoretical maximum copper uptake of 247 mg/g.As proven by XPS and FT-IR analysis,the coordination of pyrazine nitrogen atoms with copper ions is the dominant adsorption mechanism of copper by pz-UiO-66.This work provides an opportunity for efficient and selective copper removal under strongly acidic conditions,and promises extensive application prospects for the removal of copper in the treatment for acid metallurgical wastewater.