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Article Dans Une Revue Microporous and Mesoporous Materials Année : 2023

Dual Regulation of Graphene Oxide Membrane by Crosslinker and Hydrophilic Promoter for Dye Separation

Résumé

Graphene oxide (GO)-based membranes have shown considerable promise in the field of water treatment. However, the structural swelling of GO membranes in water has hindered their further development. A single regulatory approach seems difficult to simultaneously improve permeability, selectivity, and stability. In this study, we present a dual regulation strategy for GO membranes employing the 1,4-Diaminobutane crosslinker to prevent swelling and maintain an interlayer spacing of 1.34 nm, resulting in effective dye rejection, and employing the hydrophilic EMT-type zeolite promoter to improve the membrane's water permeability. The obtained NH 2-GO/10EMT composite membrane exhibited enhanced pure water flux (from 9.0 to 20.8 L/m 2 •h•bar) and anionic dye rejection (from 87.2% to 97.6%) with promising structure stability (at least 20 h), while greatly improving the membrane's fouling resistance (the water recovery ratio increased from 46.5% to 86.2%). Our findings provide a straightforward and efficient approach to the development of high-performance GO membranes for selective water separation.
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Dates et versions

hal-04285824 , version 1 (14-11-2023)

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Ge Yang, Mengling Sun, Chunzheng Wang, Yanpeng Li, Yongming Chai, et al.. Dual Regulation of Graphene Oxide Membrane by Crosslinker and Hydrophilic Promoter for Dye Separation. Microporous and Mesoporous Materials, 2023, 360, pp.112718. ⟨10.1016/j.micromeso.2023.112718⟩. ⟨hal-04285824⟩
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