Abstract
Membranes with high water permeation capability as well as high rejection to dye molecules are very important for dye separation. In this study, a metal organic framework structure (Cu-BTC) was fabricated in situ on a poly(vinyl difluoride) hollow fiber support for nanofiltration of dye solution. In order to protect the Cu-BTC layer, the surface was coated by crosslinking polyvinyl alcohol. The composite membranes showed no rejection to divalent salts and high rejection to Congo Red dye. It was noticed that several Cu-BTC layers could enhance dye rejection of the composite membranes. This novel composite membrane showed promising applications in the separation of dye molecules from aqueous solutions containing dissolved salts.
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Chen, Y., Liu, H., Hu, X. et al. PVDF/Cu-BTC composite membranes for dye separation. Fibers Polym 18, 1250–1254 (2017). https://doi.org/10.1007/s12221-017-6814-7
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DOI: https://doi.org/10.1007/s12221-017-6814-7