Thin film nanocomposite membranes of PIM-1 and graphene oxide/ZIF-8 nanohybrids for organophilic pervaporation

Qiu, B. ; Alberto, M. ; Mohsenpour, S. ; Foster, A. B. ; Ding, S. ; Guo, Z. ; Xu, S. ; Holmes, S. M. ; Budd, P. M. ; Fan, X. ; Gorgojo Alonso, P. (Universidad de Zaragoza)

Resumen: In this work, thin film nanocomposite (TFN) membranes of super-glassy polymer PIM-1 containing zeolitic imidazolate framework-8 (ZIF-8)/graphene oxide (GO) composites (ZG) have been prepared by dip-coating onto water pre-impregnated polyvinylidene fluoride (PVDF) substrates. Higher flux and improved separation factors as compared to bare PIM-1 thin film composite (TFC) membranes have been achieved in organophilic pervaporation; for an aqueous feed solution with 5 wt% of butanol at 65 °C, a total permeate flux of 7.9 ± 0.69 kg m-2h-1 and a separation factor (ßBtOH/H2O) of 29.9 ± 1.99 have been obtained with a TFC membrane containing 0.5 wt% of ZG filler. The pervaporation separation index (PSI) of this membrane (228 kg m-2h-1) is amongst the highest values reported in the literature. This excellent performance is attributed to the formation of a defect-free PIM-1 active layer (<1 µm) and the hydrophobic nature of the ZG fillers. © 2022 The Authors

Idioma: Inglés

DOI: 10.1016/j.seppur.2022.121693

Año: 2022

Publicado en: Separation and Purification Technology 299 (2022), 121693 [12 pp]
ISSN: 1383-5866

Factor impacto JCR: 8.6 (2022)

Categ. JCR: ENGINEERING, CHEMICAL rank: 12 / 141 = 0.085 (2022) - Q1 - T1

Factor impacto CITESCORE: 12.7 - Chemistry (Q1) - Chemical Engineering (Q1)

Factor impacto SCIMAGO: 1.339 - Filtration and Separation (Q1) - Analytical Chemistry (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MICINN/RYC2019-027060-I

Tipo y forma: Article (Published version)

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