Metal-organic frameworks cavity size effect on the extraction of organic pollutants

被引：36

作者：

Sini, Karima ^{[1
,2
]}

Bourgeois, Damien ^{[1
]}

Idouhar, Madjid ^{[2
]}

Carboni, Michael ^{[1
]}

Meyer, Daniel ^{[1
]}

机构：

[1] Univ Montpellier, CNRS, CEA, ICSM,ENSCM, Marcoule, France

[2] USTHB, Lab Chim Organ Appl, BP 32, Bab Ezzouar 16111, Alger, Algeria

来源：

MATERIALS LETTERS | 2019年 / 250卷 / 92-95期

关键词：

Perfluorinated pollutants; Hydrophobic interaction; Waste water treatment; Metal-organic framework; Porous materials; PERFLUOROOCTANE SULFONATE; PERFLUORINATED COMPOUNDS; SORPTION; PHOTODEGRADATION; IRRADIATION; ADSORPTION; WATER; PFOA;

D O I：

10.1016/j.matlet.2019.04.113

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zirconium Metal-organic frameworks (MOFs, UiO-66 and UiO-67) have been used for the removal from aqueous solutions of persistent fluorinated pollutants, perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). The two isostructural materials differ in cavity size, defined by the ligand, bdc (benzene-dicarboxylic acid) or bpdc (biphenyl-dicarboxylic acid) for UiO-66 and UiO-67 respectively. Both materials enable efficient sorption of PFOA and PFOS. Sorption kinetics and isotherms have been experimentally determined, and thermodynamic parameters Delta H degrees, Delta S degrees and Delta G degrees have been determined. UiO-67 shows higher sorption capacities (up to 743 mg.g(-1) for PFOA and 585 mg.g(-1) for PFOS) compared to these of UiO-66 (388 and 160 mg.g(-1) for the sorption of PFOA and PFOS respectively) with a change in the sorption mechanism. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：92 / 95

页数：4

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