title: Growth of 2D sheets of a MOF on graphene surfaces to yield composites with novel gas adsorption characteristics.
abstract: Homogeneous graphene-MOF composites based on a 2D pillared-bilayer MOF (Cd-PBM), {[Cd4(azpy)2(pyrdc)4(H2O)2]·9H2O}n (azpy = 4,4'-azopyridine, pyrdc = pyridine-2,3-dicarboxylate), have been synthesized, using both graphene oxide (GO) and benzoic acid functionalized graphene (BFG). The composites GO@Cd-PBM and BFG@Cd-PBM demonstrate growth of the 2D nano-sheets of MOF on the graphene surface. While the pristine MOF, Cd-PBM shows selective CO2 uptake with a single-step type-I adsorption profile, the composites show stepwise CO2 uptake with a large hysteresis. With H2O and MeOH, on the other hand, the composites show a single-step adsorption unlike the parent MOF.
authors.affiliation: International Centre for Material Science, Chemistry and Physics of Materials Unit and New Chemistry Unit, Jawaharal Nehru Centre for Advanced Scientific Research, Jakkur, P.O., Bangalore-560064, India. tmaji@jncasr.ac.in.
authors.forename: Ram
authors.initials: R
authors.lastname: Kumar
authors.forename: Kolleboyina
authors.initials: K
authors.lastname: Jayaramulu
authors.forename: Tapas Kumar
authors.initials: TK
authors.lastname: Maji
authors.forename: C N R
authors.initials: CN
authors.lastname: Rao