Graphene oxide incorporated thin film nanocomposite membrane at low concentration monomers

Potential of adsorbents from agricultural wastes as alternative fillers in mixed matrix membrane for gas separation: A review

“…The gas permeation results show significant improvement in the permeability of CO 2 for 2 wt% nanosilica/PEBA membrane compared to pure PEBA membrane, from 22.0 up to 270.0 Barrer, respectively. Similarly as reported by Zhao et al [83] in the preparation of graphene oxide nanocomposite membrane.…”

Temperature Dependence of the Pore Structure in Polyvinylidene Fluoride (PVDF)/Graphene Composite Membrane Probed by Electrochemical Impedance Spectroscopy

“…Thus, the thermal stability of the pore structure in the composite membrane should be attributed to the graphene introduced in the membrane. Lastly, it was found that the morphology of the PVDF/graphene membrane is rougher than the pure PVDF membrane, which is similar to other results [24,25]. Since the graphene is an extreme hydrophobic material [26,27], the water molecules prefer to contact the area without graphene during the phase conversion stage.…”

Fabrication of high performance TFN membrane containing NH2-SWCNTs via interfacial regulation

“…Besides, high water ux can help dilute the ltrate and thus enhance salt rejection. 10 Consequently, the optimum PIP concentration was 0.75 wt%, and hence this formulation was chosen for the addition of NH 2 -SWCNTs to further improve the NF performance.…”

“…In general, the protonation of amine groups leads to positive charge of the membrane at low pH values, while the deprotonation of carboxylic acid groups leads to negative charge at high pH values. 10 In the case of TFC NF membranes without embedded NH 2 -SWCNTs, the carboxylic acid groups mainly originate from TMC, while groups containing N exist in the PIP monomer and are generally unreacted amine groups. 46 In the case of the NH 2 -SWCNT TFN membranes, NH 2 -SWCNT has both unreacted carboxylic and amine groups in its nanotube structure, causing increased contribution to negative charges on the membrane surfaces.…”

“…Among various methods, the induction of nanomaterials into the PA layer has been proven to be a promising strategy to design highly effective membranes. 10 A series of novel thin-lm nanocomposite (TFN) NF membranes has been constructed via the incorporation of various types of nanomaterials including metal-organic framework nanoparticles such as ZIF-8, 11 carbonbased nanomaterials such as carbon nanotubes (CNTs) 12 and graphene oxide, 13 metal nanoparticles comprising silver, 14 metal oxide nanoparticles comprising TiO 2 , 15 covalent organic framework nanoparticles, 16 and nano-scaffolds such as tannic acid/Fe 3+ . 17 Nanomaterials with large surface areas and signicant quantities of functional groups exhibit superior antibiofouling 18 and anti-bacterial 14 properties.…”