Enhanced Gas Permeation through Graphene Nanocomposites
Kyle J Berean, Jian Zhen Ou, Majid Nour, Matthew R Field, Manal MYA Alsaif, Yichao Wang, Rajesh Ramanathan, Vipul Bansal, Sandra Kentish, Cara M Doherty, Anita J Hill, Chris McSweeney, Richard B Kaner, Kourosh Kalantar-zadeh
The Journal of Physical Chemistry C | AMER CHEMICAL SOC | Published : 2015
The use of membranes for gas permeation and phase separation offers many distinct advantages over other more energy-dependent processes. The operational efficiencies of these membranes rely heavily on high gas permeability. Here, we report membranes with significantly increased permeability without a considerable decrease in mechanical strength or selectivity, synthesized from a polymer nanocomposite that incorporates graphene and polydimethylsiloxane (PDMS). These graphene-PDMS nanocomposite membranes were able to enhance the gas permeation of N2, CO2, Ar, and CH4 in reference to pristine PDMS membranes. This is achieved by creating interfacial voids between the graphene flakes and polymer ..View full abstract
The authors acknowledge the Commonwealth Government for providing the Australian Postgraduate Awards scholarship for K.J.B. This work has been supported by the Australian Department of Agriculture (DA) and the Commonwealth Scientific and Industrial Research Organization (CSIRO), Australia. The authors also acknowledge the RMIT Microscopy and Microanalysis Facility (RMMF).