Bioinspired tannic acid-copper complexes as selective coating for nanofiltration membranes

Research output: Contribution to journal › Article › Research › peer review

Authors

  • Tina Chakrabarty
  • Liliana Perez Manriquez
  • Pradeep Neelakanda
  • Klaus-Viktor Peinemann

External Research Organisations

  • King Abdullah University of Science and Technology (KAUST)
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Details

Original languageEnglish
Pages (from-to)188-194
Number of pages7
JournalSeparation and Purification Technology
Volume184
Early online date27 Apr 2017
Publication statusPublished - 31 Aug 2017
Externally publishedYes

Abstract

Bio-polyphenols that are present in tea, date fruits, chockolate and many other plants have been recognized as scaffold material for the manufacture of composite filtration membranes. These phenolic biomolecules possess abundant gallol (1,2,3-trihydroxyphenyl) and catechol (1,2-dihydroxyphenyl) functional groups, which allow the spontaneous formation of a thin polymerized layer at the right pH conditions. Here, we report a facile and cost-effective method to coat porous membranes via the complexation of tannic acid (TA) and cupric acetate (mono hydrate) through co-deposition. The modified membranes were investigated by XPS, ATR/FTIR, water contact angle, SEM and water permeance for a structural and morphological analysis. The obtained results reveal that the modified membranes with TA and cupric acetate (CuII) developed a thin skin layer, which showed excellent hydrophilicity with good water permeance. These membranes were tested with different molecular weight polyethylene glycols (PEG) in aqueous solution; the MWCO was around 600 Daltons.

Keywords

    Membrane surface modification, Nanofiltration, Polyphenols, Tannic acid-copper complex

ASJC Scopus subject areas

Cite this

Bioinspired tannic acid-copper complexes as selective coating for nanofiltration membranes. / Chakrabarty, Tina; Perez Manriquez, Liliana; Neelakanda, Pradeep et al.
In: Separation and Purification Technology, Vol. 184, 31.08.2017, p. 188-194.

Research output: Contribution to journal › Article › Research › peer review

Chakrabarty T, Perez Manriquez L, Neelakanda P, Peinemann KV. Bioinspired tannic acid-copper complexes as selective coating for nanofiltration membranes. Separation and Purification Technology. 2017 Aug 31;184:188-194. Epub 2017 Apr 27. doi: 10.1016/j.seppur.2017.04.043
Chakrabarty, Tina ; Perez Manriquez, Liliana ; Neelakanda, Pradeep et al. / Bioinspired tannic acid-copper complexes as selective coating for nanofiltration membranes. In: Separation and Purification Technology. 2017 ; Vol. 184. pp. 188-194.
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AU - Chakrabarty, Tina

AU - Perez Manriquez, Liliana

AU - Neelakanda, Pradeep

AU - Peinemann, Klaus-Viktor

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