Structure and sieving mechanism of high selective graphene-based membranes
Paper i proceeding, 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

Författare

Davide Pierleoni

Universita di Bologna

Matteo Minelli

Universita di Bologna

Simone Ligi

GRAPHENE-XT SRL

V. Morandi

Istituto per la Microelettronica ei Microsistemi - Bologna CNR IMM

Vincenzo Palermo

Consiglo Nazionale Delle Richerche

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Ferruccio Doghieri

Universita di 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,

Ämneskategorier

Fysikalisk kemi

Materialkemi

Annan kemi

DOI

10.1063/1.5046018

Mer information

Senast uppdaterat

2018-12-28