TY - JOUR
T1 - Bioinspired tannic acid-copper complexes as selective coating for nanofiltration membranes
AU - Chakrabarty, Tina
AU - Pérez-Manríquez, Liliana
AU - Neelakanda, Pradeep
AU - Peinemann, Klaus-Viktor
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We gratefully acknowledge the financial support from King Abdullah University of Science and Technology (KAUST). We also thank Mohamed Nejib Hedhiliand and Ali Behzad from KAUST Analytical core lab for XPS and SEM analysis.
PY - 2017/4/27
Y1 - 2017/4/27
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/623321
UR - http://www.sciencedirect.com/science/article/pii/S1383586617303155
UR - http://www.scopus.com/inward/record.url?scp=85018768627&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2017.04.043
DO - 10.1016/j.seppur.2017.04.043
M3 - Article
SN - 1383-5866
VL - 184
SP - 188
EP - 194
JO - Separation and Purification Technology
JF - Separation and Purification Technology
ER -