Thin film nanocomposite membranes of superglassy PIM-1 and amine-functionalised 2D fillers for gas separation

Almansour, Faiz ; Alberto, Monica ; Foster, Andrew B. ; Mohsenpour, Sajjad ; Budd, Peter M. ; Gorgojo, Patricia (Universidad de Zaragoza)

Resumen: Loss of free volume over time (i.e. aging) is the main hurdle towards the commercial use of super glassy polymers for gas separation membranes. Aging takes place at a much faster rate in polymeric thin films, with permeability reductions of over 50% in only a few days. In this work 2D reduced holey graphene oxide (rHGO) nanosheets containing amine groups were added into thin films of the super-glassy polymer of intrinsic microporosity PIM-1. At filler loadings of 1 wt% of rHGO-tris(4-aminophenyl)amine, the CO2 permeance after 1 year of physical aging was 846 ± 37 GPU, which remained very close to that of the fresh membrane tested right after preparation (1050 ± 70 GPU), and was double that of 1 year-aged purely PIM-1 thin film composite membranes (432 ± 4 GPU). Membranes with lower filler concentrations of 0.1 wt% showed CO2 permeance values of 604 ± 34 GPU after 1 year of aging, but they aged quite rapidly; the initial CO2 permeance values of the fresh thin film nanocomposite (TFN) membrane at filler loading of 0.1 wt% was 3351 ± 662 GPU. The aging behaviour was also investigated in several tens of micrometres thick membranes (up to 2 years) for filler loadings of 0.1 wt% and the gas separation performance showed similar tendencies to that of thin films; leading to higher CO2 permeability without sacrificing CO2/CH4 selectivity.

Idioma: Inglés

DOI: 10.1039/d2ta06339e

Año: 2022

Publicado en: Journal of Materials Chemistry A 10, 43 (2022), 23341-23351
ISSN: 2050-7488

Factor impacto JCR: 11.9 (2022)

Categ. JCR: CHEMISTRY, PHYSICAL rank: 24 / 161 = 0.149 (2022) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 32 / 343 = 0.093 (2022) - Q1 - T1
Categ. JCR: ENERGY & FUELS rank: 11 / 119 = 0.092 (2022) - Q1 - T1

Factor impacto CITESCORE: 22.0 - Materials Science (Q1) - Chemistry (Q1) - Energy (Q1)

Factor impacto SCIMAGO: 3.156 - Chemistry (miscellaneous) (Q1) - Renewable Energy, Sustainability and the Environment (Q1) - Materials Science (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MINECO/RYC2019-027060-I/AEI/10.13039/501100011033

Tipo y forma: Article (Published version)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)