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Journal of University of Chinese Academy of Sciences ›› 2025, Vol. 42 ›› Issue (4): 450-459.DOI: 10.7523/j.ucas.2023.085

• Research Articles • Previous Articles    

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

CAI Yanrong1, LI Xueyan1, JIANG Weili1, WANG Qiong1, CHANG Chun1,2   

  1. 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:2023-06-20 Revised:2023-10-30

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

CLC Number: