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2025 , Vol. 42 >Issue 4: 450 - 459

DOI: https://doi.org/10.7523/j.ucas.2023.085

数学与物理学

MIL-53(Fe)复合材料对废水中双氯芬酸钠的吸附

  • 蔡艳荣 ,
  • 李雪妍 ,
  • 蒋伟丽 ,
  • 王琼 ,
  • 常春
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  • 1. 渤海大学化学与材料工程学院, 辽宁锦州 121013;
    2. 大连大学环境与化工学院, 辽宁大连 116622

收稿日期: 2023-06-20

  修回日期: 2023-10-30

  网络出版日期: 2023-12-12

基金资助

辽宁省“兴辽英才”项目(XLYC1907173)、国家自然科学基金青年项目(22205027)、辽宁省教育厅科学研究经费(LJKMZ20221835，LQ2020014，LJ2020014)、辽宁省科技厅博士启动基金(2021-BS-253)和国家环境保护近岸海域生态环境重点实验室开放基金(202103)资助

收起

Adsorption of diclofenac sodium from wastewater by MIL-53(Fe) composite materials

  • CAI Yanrong ,
  • LI Xueyan ,
  • JIANG Weili ,
  • WANG Qiong ,
  • CHANG Chun
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  • 1. College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121013, Liaoning, China;
    2. College of Environmental and Chemical Engineering, Dalian University, Dalian 116622, Liaoning, China

Received date: 2023-06-20

  Revised date: 2023-10-30

  Online published: 2023-12-12

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摘要

用溶剂热法制备Fe-MOF材料MIL-53 (Fe)和MIL-53 (Fe)-10FA，研究2种材料吸附水溶液中双氯芬酸钠(DCF)的性能。2种MOF材料对DCF的吸附行为都遵循准二级动力学模型，吸附过程属于化学吸附。吸附平衡等温线符合Langmuir等温吸附模型，为单分子层吸附。甲酸改性后的MIL-53 (Fe)-10FA与MIL-53 (Fe)相比，表面形态结构发生变化，晶体尺寸变大，孔径、比表面积和总孔容增加，含氧官能团含量增加，对DCF的吸附性能优异，Langmuir等温线拟合的最大吸附量为652.29 mg/g，吸附机理主要包括氢键作用和苯环与苯环之间π-π堆积作用。

关键词： 吸附; MIL-53(Fe); 改性; 双氯芬酸钠

本文引用格式

蔡艳荣 , 李雪妍 , 蒋伟丽 , 王琼 , 常春 . MIL-53(Fe)复合材料对废水中双氯芬酸钠的吸附[J]. 中国科学院大学学报, 2025 , 42(4) : 450 -459 . DOI: 10.7523/j.ucas.2023.085

Abstract

Fe-MOF materials MIL-53 (Fe) and MIL-53 (Fe)-10FA were prepared by solvothermal method, and their adsorption properties for diclofenac sodium (DCF) in aqueous solution were investigated. The adsorption behavior of the two MOF materials to DCF follows the pseudo-second-order kinetic model, and the adsorption process belongs to chemical adsorption. The adsorption equilibrium isotherm conforms to the Langmuir adsorption isotherm model and is monolayer adsorption. The surface morphology of MIL-53 (Fe)-10FA modified by formic acid was different from that of MIL-53 (Fe). The crystal size was larger than that of MIL-53(Fe). The pore size, specific surface area and total pore volume increased after modified. The content of oxygen-containing functional groups also increased. The adsorption capacity of MIL-53 (Fe)-10FA for DCF was significant, and the maximum adsorption capacity of Langmuir isotherm fitting was 652.29 mg/g. The adsorption mechanism mainly includes hydrogen bonding and π-π stacking between benzene rings and benzene rings.

Key words： adsorption; MIL-53 (Fe); modification; diclofenac sodium

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