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    Solvent-resistant Triazine-Piperazine Linked Porous Covalent Organic Polymer Thin-film Nanofiltration Membrane

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    Type
    Article
    Authors
    Das, Swapan Kumar cc
    Manchanda, Priyanka
    Peinemann, Klaus-Viktor cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Biological and Environmental Sciences and Engineering (BESE) Division
    Chemical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2018-12-21
    Online Publication Date
    2018-12-21
    Print Publication Date
    2019-04
    Permanent link to this record
    http://hdl.handle.net/10754/630379
    
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    Abstract
    We present the fabrication of a novel porous covalent organic triazine-piperazine based membrane (CTP membrane) for solvent nanofiltration. The porous CTP skin layer grows on the top surface of polyacrylonitrile (PAN) support in presence of N, N-diisopropylethylamine (DIPEA) in the water/heptane interfacial reaction. The CTP skin layer membrane showed solvent-resistant property to a wide range of common solvents such as DMF, DMSO, and NMP; the stability of the composite membrane is limited by the PAN support. Chemical bonding and elemental analyses confirm the incorporation and linking of the triazine and piperazine components in the nanofilms skeleton. Electron microscopic image analysis demonstrates that the CTP skin layer nicely covers the PAN support and has porous and crumple morphology. The membrane exhibits excellent NF properties as demonstrated by the selective dye rejection and salt rejection experiment. The CTP membrane showed dye rejection (Reactive black-5; MW 992 gmol−1) and salt rejection (Na2SO4) 96.7%, and 91.3%, respectively. The membrane comprised a stable porous robust structure, large surface area, well-defined pore topology, and solvent durability coupled with the zeta potential. All of these cooperatively benefits to achieve superior performances in separation, reusability with high permeance, leading to state of the art performance in the NF application.
    Citation
    Das SK, Manchanda P, Peinemann K-V (2019) Solvent-resistant triazine-piperazine linked porous covalent organic polymer thin-film nanofiltration membrane. Separation and Purification Technology 213: 348–358. Available: http://dx.doi.org/10.1016/j.seppur.2018.12.046.
    Sponsors
    We gratefully acknowledge the financial support from the King Abdullah University of Science and Technology (KAUST), Centre Competitive Research grant FCC/1/1972, and Baseline FundBAS/1/1332. The authors also acknowledge Abdul-Hamid Emwas for the NMR analysis.
    Publisher
    Elsevier BV
    Journal
    Separation and Purification Technology
    DOI
    10.1016/j.seppur.2018.12.046
    Additional Links
    https://www.sciencedirect.com/science/article/pii/S1383586618333604
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.seppur.2018.12.046
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Engineering Program

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