金属有机骨架衍生磁性多孔碳吸附刚果红研究

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英文篇名：Adsorption of Congo Red on Magnetic Porous Carbon Derived from Metal-Organic Frameworks 作者：彭琳 ; 龚小波 ; 谢春雨 ; 吴莉莉 ; 杨照 ; 刘咏 英文作者：PENG Lin;GONG Xiaobo;XIE Chunyu;WU Lili;YANG Zhao;LIU Yong;College of Chemistry and Materials Science, Sichuan Normal University;Key Laboratory of Special Waste Water Treatment,Sichuan Province Higher Education System; 关键词：刚果红 ; 吸附 ; 磁性多孔碳材料 ; 金属有机框架材料 英文关键词：Congo red;;adsorption;;magnetic porous carbon materials;;metal-organic frameworks 中文刊名：SCLJ 英文刊名：Technology of Water Treatment 机构：四川师范大学化学与材料科学学院;特种废水处理四川省高校重点实验室; 出版日期：2019-04-22 10:00 出版单位：水处理技术 年：2019 期：v.45;No.327 基金：国家自然科学基金资助项目(51708374);; 四川省教育厅科研重点项目(18ZA0399);; “特种废水处理”四川省高校重点实验室开放课题基金(SWWT2016-1) 语种：中文; 页：SCLJ201904007 页数：5 CN：04 ISSN：33-1127/P 分类号：32-35+41

摘要

基于沸石咪唑类金属有机骨架(ZIF-67)获得了磁性多孔碳材料(MPC),探讨了pH、时间、温度、刚果红含量、MPC投加量等因素对吸附刚果红的作用。结果表明,MPC对刚果红在较宽pH范围内均具备良好的吸附效果;升高温度、增加刚果红含量、加大MPC投加量对MPC吸附刚果红的过程均有积极促进的作用。准2级动力学模型可解释MPC吸附过程;Langmiure比Freundlich和D-R等温吸附模型吸附能更好解释该吸附刚果红过程,吸附最大容量为69.4 mg/g。此吸附是一个自发的吸热过程。
        Magnetic porous carbon materials was obtained based by ZIF-67, the effect of pH, time, temperature, Congo red(CR) content, MPC dosage on Congo red adsorption was discussed. The results showed that MPC had a good adsorption effect on CR in a wide pH range. The adsorption capacity of MPC increased with the increase of temperature, CR content and MPC dosage. The pseudo-second order kinetic model could be used to describe the adsorption process by MPC. Langmuir adsorption model could describe the CR adsorption process better than Freundlich and Dubinin-Radushkevich(D-R) isothermal adsorption model, and the maximum adsorption capacity was 69.4 mg/g. This adsorption was a spontaneous and endothermic process.

引文

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