Polyamide thin-film nanocomposite membranes with graphene oxide nanosheets: Balancing membrane performance and fouling propensity

2D nanosheet enabled thin film nanocomposite membranes for freshwater production – a review

“…Its desirable properties include atomic thickness, smoothness, and abundant availability of oxygen functional groups on its surface, facilitating higher rate of water transport through its nanochannels. 21,46,47 The incorporation of GO across the PA layers of TFC membranes produces membranes with improved hydrophilicity and enhanced performance. 5,48,49 TFN RO membranes embedded with GO in the PA layer exhibited high anti-biofouling property and chlorine resistance, combined with high water permeation and maintained high salt rejection (Table S1, ESI, † entry 1).…”

“…The effect of incorporation of GO nanosheets into the PA layer on permeance and fouling resistance has been extensively studied (Table S1, ESI, † entry 5). 46 GO was dispersed in the organic phase at three different concentrations at 0.0053 (TFN-Low), 0.0107 (TFN-Med) and 0.0160 (TFN-High) wt%. Increasing the GO content resulted in improving the antifouling and antimicrobial properties of TFN membranes.…”

In situ assembly of a graphene oxide quantum dot-based thin-film nanocomposite supported on de-mixed blends for desalination through forward osmosis

“…11,[14][15][16][17] It has been reported that incorporation of GO in membranes enhances the hydrophilicity, bacterial resistance and foul resistance of the same. 11,16,18,19 Further, GQDs formed aer the disintegration of planar sheets into smaller fragments improve the performance further. 20 This is due to the formation of a greater number of carboxylic and hydroxyl groups which enhance hydrophilicity as well as making a proper channel to permeate water.…”

ON/OFF Switchable Nanocomposite Membranes for Separations

“…However, it is virtually impossible to make such an ideal material. If a material has two opposite properties, it is generally likely that the properties exist as a trade-off of one another [ 1 , 2 , 3 , 4 , 5 ]. Because molecular-level properties can affect each other, the co-existence of two conflicting characteristics in a single material is never natural, and most materials have not done so throughout Earth’s long history.…”