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- W4282836701 abstract "The shortage of water resources and the increased demand for clean water warrant focused investigations on wastewater treatment. In this regard, mixed matrix membranes (MMMs) have been introduced as economic and efficient tools for removing contaminants from wastewater. The current study deals with the synthesis of a hydrazone-linked covalent organic framework (Hz-TFPTZ-COF) and its incorporation into polysulfone (PSf)/ poly N-vinylpyrrolidone (PVP) matrix to obtain [email protected]/PVP MMM containing different concentrations of Hz-TFPTZ-COF (0–1 wt%). The synthesized Hz-TFPTZ-COF and the prepared MMMs were fully characterized using various analytical techniques. The negative surface charge of Hz-TFPTZ-COF made it a good candidate for removing cationic dyes. Moreover, the effect of Hz-TFPTZ-COF loading on the mechanical properties, porosity, pure water permeability (PWP), and dye rejection of the prepared MMMs was investigated. Hz-TFPTZ-COF concentration as low as 1.0 wt% in the MMM formulation yielded a PWP as high as 94.69 L. m−2. h−1. bar−1 and dye rejection of 92% and 88% for Basic Blue 41 and Methyl Violet, respectively. In addition, the tensile strength of the prepared MMMs was increased from 2.26 to 3.43 MPa. Overall, incorporating the Hz-TFPTZ-COF into PSf/PVP polymeric matrix affords a MMM with superior performance in the purification of cationic dye wastewater." @default.
- W4282836701 created "2022-06-15" @default.
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- W4282836701 date "2022-10-01" @default.
- W4282836701 modified "2023-10-05" @default.
- W4282836701 title "Developing polysulfone-based mixed matrix membrane containing hydrazone-linked covalent organic frameworks towards dye wastewater purification" @default.
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- W4282836701 doi "https://doi.org/10.1016/j.cej.2022.137456" @default.
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