Construction of graphene oxide based mixed matrix membranes with CO<inf>2</inf>-philic sieving gas-transport channels through strong p-p Interactions
|dc.contributor.author||Van Der Bruggen, B.|
|dc.identifier.citation||Cong, S. and Li, H. and Shen, X. and Wang, J. and Zhu, J. and Liu, J. and Zhang, Y. et al. 2018. Construction of graphene oxide based mixed matrix membranes with CO<inf>2</inf>-philic sieving gas-transport channels through strong p-p Interactions. Journal of Materials Chemistry A. 6 (37): pp. 17854-17860.|
© 2018 The Royal Society of Chemistry. Two-dimensional nanomaterials can be used to create innovative membranes with high permeability and selectivity, but precise manipulation of laminar stacking and the construction of ordered, CO2-philic molecular sieving channels remains a technological challenge. Here, gas separation membranes containing advanced CO2-philic nano-laminar clusters in the interlayer channels of graphene oxide (GO) were formed by the intercalation of an o-hydroxya porous organic polymers (POPs) into GO. POPs are phenolic azo-hierarchically mesoporous polymers; the azo group of POPs allows to reject N2, while the unreacted phenolic groups on the POP surface have a high CO2-philic and nanocephalic character. Beyond that, the introduced POPs could tailor the interlayer height of graphene oxide-assembled 2D nanochannels and feature an ordered structure of such graphene oxide nanosheets. Therefore, POP-GO may facilitate a superior CO2/N2separation performance for the membrane because of the synergetic effect of GO and POPs. The POP-GO membrane was found to have a high CO2permeability of 696 barrer and a CO2/N2ideal selectivity of 51.2, which is beyond Robeson's upper bound (2008). The d-spacing of graphene oxide after adjustment is approximately 3.5 Å according to a Density Functional Theory (DFT) simulation; this is between the dynamic radius of CO2and N2. This approach potentially offers the opportunity to precisely manipulate the d-spacing of graphene oxide through chemical bonds, which has potential for large-scale applications compared to conventional vacuum-assisted filtration.
|dc.publisher||R S C Publications|
|dc.title||Construction of graphene oxide based mixed matrix membranes with CO<inf>2</inf>-philic sieving gas-transport channels through strong p-p Interactions|
|dcterms.source.title||Journal of Materials Chemistry A|
|curtin.department||WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)|
|curtin.accessStatus||Fulltext not available|
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