Structure and sieving mechanism of high selective graphene-based membranes
Paper in proceedings, 2018

Graphene oxide was used as charge able to confer high selectivity to the final product. A self-assembling technique, namely layer-by-layer has been developed to stratify graphene-based coating on polymeric films; this coating is composed by nanolayers of graphene oxide alternated with polymers, bonded each other by electrostatic forces. Permeability measurement on layered Matrimid®, a commercial polyimide, showed incredibly high selectivity values to small particle mixtures, as O2, CO2, He and H2. Through simple post-treatments the selective performance was also improved, as demonstration of potentiality of the well-ordered bi-dimensional system: improvement on the coating would make this material one of the viable solution for industrial separations, e.g. hydrogen purification in sustainable energy production. A further investigation on similar structures obtained by other strategies shall demonstrate the peculiar mechanism occurring in this material for high selective performance.

membrane separation

layer-by-layer

graphene oxide

hydrogen purification

Author

Davide Pierleoni

University of Bologna

Matteo Minelli

University of Bologna

Simone Ligi

GRAPHENE-XT SRL

V. Morandi

Institute for Microelectronics and Microsystems

Vincenzo Palermo

Consiglo Nazionale Delle Richerche

Chalmers, Industrial and Materials Science, Materials and manufacture

Ferruccio Doghieri

University of Bologna

AIP Conference Proceedings

0094-243X (ISSN) 1551-7616 (eISSN)

Vol. 1981 020156

9th International Conference on Times of Polymers and Composites: From Aerospace to Nanotechnology
Ischia, Naples, Italy,

Subject Categories

Physical Chemistry

Materials Chemistry

Other Chemistry Topics

DOI

10.1063/1.5046018

More information

Latest update

12/28/2018