Novel thin film nanocomposite membranes incorporated with polyoxovanadate nanocluster for high water flux and antibacterial properties

2020 ◽  
Vol 34 (4) ◽  
Author(s):  
Mojtaba Amini ◽  
Zahra Shekari ◽  
Ali Akbari ◽  
Hadi Naslhajian ◽  
Ayda Sheykhi ◽  
...  
Keyword(s):  
Thin Film ◽  
Water Flux ◽  
Antibacterial Properties ◽  
High Water ◽  
Nanocomposite Membranes ◽  
Thin Film Nanocomposite

scholarly journals Organo-Functionalization: An Effective Method in Enhancing the Separation and Antifouling Performance of Thin-Film Nanocomposite Membranes by Improving the Uniform Dispersion of Palygorskite Nanoparticles

Membranes ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 889
Author(s):  
Liu Yang ◽  
Qianwen Zhang ◽  
Qikun Wang ◽  
Wande Ding ◽  
Kefeng Zhang
Keyword(s):  
Thin Film ◽  
Water Flux ◽  
Intermolecular Forces ◽  
Nanocomposite Membranes ◽  
Membrane Performance ◽  
Chemically Modified ◽  
Uniform Dispersion ◽  
Fouling Reduction ◽  
Layer Composition ◽  
Thin Film Nanocomposite

Recently, palygorskite (Pal) has become a promising new membrane additive in flux enhancement and fouling reduction, which is an environmentally friendly nanoclay material under the 2:1 layer composition with 1D tubular structure. However, the aggregation of Pal due to the intermolecular forces is still an obstacle to be solved in improving membrane performance. Herein, Pal nanoparticles were chemically modified by KH550 to weaken the aggregation and improve the dispersibility, and then incorporated into the organic phase to prepare thin-film nanocomposite (TFN) membranes. The results showed that the organo-functionalization could effectively improve the membrane hydrophilicity and dispersion of Pal nanoparticles in the polyamide layer, which contributed to the enhanced water flux (from 25 to 38 L/m2·h), unchanged salt rejection (98.0%) and better antifouling capacity (91% flux recovery rate), which suggested that the organo-functionalization of nanoparticles was an efficient method in further enhancing membrane performance

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