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Preparation of Cationic MOFs with Mobile Anions by Anion Stripping to Remove 2,4-D from Water

State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Science of Guangxi Normal University, Guilin 541004, China
Author to whom correspondence should be addressed.
Materials 2017, 10(8), 879;
Received: 3 July 2017 / Revised: 18 July 2017 / Accepted: 24 July 2017 / Published: 30 July 2017
(This article belongs to the Special Issue Metal Organic Framework Materials)
PDF [3766 KB, uploaded 31 July 2017]


A cationic porous framework with mobile anions (MIL-101(Cr)-Cl) was easily and successfully synthesized by utilizing the stronger affinity of F to Al3+ than Cr3+ in the charge-balanced framework of MIL-101(Cr). The structure, morphology and porosity of MIL-101(Cr)-Cl were characterized. The obtained new materials retain the high surface area, good thermostability, and structure topology of MIL-101(Cr). With the mobile Cl anion, MIL-101(Cr)-Cl can be used as an ion-exchange material for anionic organic pollutions. In this work, 2,4-dichlorophenoxyacetic acid (2,4-D) was used as a model to test the absorption performance of this new material. This new material exhibited improved adsorbability compared to that of the original metal-organic frameworks (MOFs). At the same time, this material also shows high anti-interference performance with changing solution pH. View Full-Text
Keywords: adsorption; 2,4-dichlorophenoxyacetic acid; ion exchange; metal-organic frameworks adsorption; 2,4-dichlorophenoxyacetic acid; ion exchange; metal-organic frameworks

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Chen, T.; Zhang, C.; Qin, Y.; Yang, H.; Zhang, P.; Ye, F. Preparation of Cationic MOFs with Mobile Anions by Anion Stripping to Remove 2,4-D from Water. Materials 2017, 10, 879.

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