Enhanced Dye Adsorption of Mixed‐Matrix Membrane by Covalent Incorporation of Metal‐Organic Framework with Poly(styrene‐alt‐maleic anhydride). Issue 19 (17th May 2021)

• Record Type: Journal Article
• Authors: Cao, Xuan Thang; Vo, The Ky; An, Tran Nguyen Minh; Nguyen, Trinh Duy; Kabtamu, Daniel Manaye; Kumar, Subodh
• Is Part Of: ChemistrySelect. Volume 6:Issue 19(2021)
• Page Start: 4689
• Page End: 4697
• Publication Date: 2021-05-17
• Subjects: metal-organic framework -- poly(styrene-alt-maleic anhydride) -- adsorption -- mixed-matrix membrane -- organic dye; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202100615
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: In this study, a novel mixed‐matrix membrane (MMM) based on covalent incorporation of poly(styrene‐ alt ‐maleic anhydride) (PSMA) with a metal‐organic framework (MOF) UiO‐66‐NH2 was prepared and utilized for dye removal from aqueous solution. The fabrication of PSMA and UiO‐66‐NH2 was carried out by the amidation reaction between the maleic anhydride ring and amino functional group affording crosslinked MOF/PSMA membrane. The separate UiO‐66‐NH2 and PSMA solutions were mixed before cast films were produced. The MMM was prepared with final UiO‐66‐NH2 wt % content from 0 to 30 % in each membrane. The formation of MMM was confirmed with FT‐IR, PXRD, TGA, SEM, and XPS analysis. The MMM having high adsorption capacity was used for the separation of methylene blue (MB) and methyl orange (MO) as organic dye pollutants commonly found in wastewater. The MMM could be recycled and still maintained 75 and 52 % retention of MB and MO on the third reuse cycle, respectively. The results suggest that the MOF incorporated PSMA was an outstanding membrane for the development of filtration techniques for decontamination of water resources. Abstract : A novel mixed‐matrix membrane (MMM) based on metal‐organic framework (MOF) UiO‐66‐NH2 and poly(styrene‐ alt ‐maleic anhydride) (PSMA) is prepared via amidation reaction for dye adsorption from aqueous solution. A series membrane from PSMA copolymer hybridized UiO‐66‐NH2 was investigated for efficient filtration. The 5 wt% MMM presented enhanced adsorption more than 5 times towards methylene blue (MB) and methyl orange (MO) as compared with pristine PSMA membrane. The MMMs still preserved sorption ability after reuse three cycles.