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- W3143797166 abstract "Nanofiltration (NF) membranes prepared by conventional interfacial polymerization (IP) method still have relative low water flux. This paper reports a kind of high-flux, ultra-thin and ultra-smooth thin-film nanocomposite (TFN) NF membranes by IP reaction with both low concentration of piperazine (PIP) and trimesoyl chloride (TMC) on the surface of a tailor-made hydrophilic interlayer. This interlayer, which was made of polyvinyl alcohol (PVA)-modified graphene oxide (GO) and was followed by further glutaraldehyde post-crosslinking, greatly helps to manipulate the IP reaction, remarkably decrease the skin layer thickness (down to 15 nm) and roughness (down to 5 nm), and increase apparently the separation performance of the TFN NF membrane. Under optimal conditions (PVA concentration of 1.0 wt%, GA concentration of 1.0 wt% and GO concentration of 10 mg L−1), the fabricated TFN NF membrane has a relative high water permeance (158 L m−2 h−1 MPa−1), an extremely high Na2SO4 rejection (99.7%), an extremely high separation factor (230) of Na2SO4 to NaCl among those of the membranes with Na2SO4 rejection higher than 98%, as well as greatly enhanced fouling resistance and chlorine resistance. The much superior advantages of the prepared TFN NF membrane over most of the state-of-the-art literature works demonstrate its vast potential in industrial separation and purification of aqueous electrolytes or organic solute solutions." @default.
- W3143797166 created "2021-04-13" @default.
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- W3143797166 date "2021-08-01" @default.
- W3143797166 modified "2023-10-14" @default.
- W3143797166 title "Fabrication of ultra-smooth thin-film composite nanofiltration membrane with enhanced selectivity and permeability on interlayer of hybrid polyvinyl alcohol and graphene oxide" @default.
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- W3143797166 doi "https://doi.org/10.1016/j.seppur.2021.118649" @default.
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