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

Boya Qiu; Monica Alberto; Sajjad Mohsenpour; Andrew Foster; Shengzhe Ding; Zunmin Guo; Shaojun Xu; Stuart Holmes; Peter Budd; Xiaolei Fan; Patricia Gorgojo

doi:10.1016/j.seppur.2022.121693

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

Boya Qiu, Monica Alberto, Sajjad Mohsenpour, Andrew Foster, Shengzhe Ding, Zunmin Guo, Shaojun Xu, Stuart Holmes, Peter Budd, Xiaolei Fan, Patricia Gorgojo (Corresponding)

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Abstract

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 (β _BtOH/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.

Original language	English
Article number	121693
Journal	Separation and Purification Technology
Volume	299
DOIs	https://doi.org/10.1016/j.seppur.2022.121693
Publication status	Published - 15 Oct 2022

Keywords

Graphene oxide (GO)
PIM-1
Thin-film nanocomposite (TFN) membrane
ZIF-8/GO
pervaporation (PV)

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10.1016/j.seppur.2022.121693

1-s2.0-S1383586622012497-mainFinal published version, 12.7 MBLicence: CC BY

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

abstract = "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 (β BtOH/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. ",

keywords = "Graphene oxide (GO), PIM-1, Thin-film nanocomposite (TFN) membrane, ZIF-8/GO, pervaporation (PV)",

author = "Boya Qiu and Monica Alberto and Sajjad Mohsenpour and Andrew Foster and Shengzhe Ding and Zunmin Guo and Shaojun Xu and Stuart Holmes and Peter Budd and Xiaolei Fan and Patricia Gorgojo",

note = "Funding Information: Patricia Gorgojo is grateful to the Spanish Ministerio de Econom{\'i}a y Competitividad and the European Social Fund for her Ramon y Cajal Fellowship ( RYC2019-027060-I/AEI/10.13039/501100011033 ). Boya Qiu would like to acknowledge the China Scholarship Council (CSC, file no. 202006240076)and the University of Manchester for the joint PhD studentship to support her research. Publisher Copyright: {\textcopyright} 2022 The Authors",

year = "2022",

month = oct,

day = "15",

doi = "10.1016/j.seppur.2022.121693",

language = "English",

volume = "299",

journal = "Separation and Purification Technology",

issn = "1383-5866",

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T1 - Thin film nanocomposite membranes of PIM-1 and graphene oxide/ZIF-8 nanohybrids for organophilic pervaporation

AU - Qiu, Boya

AU - Alberto, Monica

AU - Mohsenpour, Sajjad

AU - Foster, Andrew

AU - Ding, Shengzhe

AU - Guo, Zunmin

AU - Xu, Shaojun

AU - Holmes, Stuart

AU - Budd, Peter

AU - Fan, Xiaolei

A2 - Gorgojo, Patricia

N1 - Funding Information: Patricia Gorgojo is grateful to the Spanish Ministerio de Economía y Competitividad and the European Social Fund for her Ramon y Cajal Fellowship ( RYC2019-027060-I/AEI/10.13039/501100011033 ). Boya Qiu would like to acknowledge the China Scholarship Council (CSC, file no. 202006240076)and the University of Manchester for the joint PhD studentship to support her research. Publisher Copyright: © 2022 The Authors

PY - 2022/10/15

Y1 - 2022/10/15

N2 - 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 (β BtOH/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.

AB - 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 (β BtOH/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.

KW - Graphene oxide (GO)

KW - PIM-1

KW - Thin-film nanocomposite (TFN) membrane

KW - ZIF-8/GO

KW - pervaporation (PV)

U2 - 10.1016/j.seppur.2022.121693

DO - 10.1016/j.seppur.2022.121693

M3 - Article

SN - 1383-5866

VL - 299

JO - Separation and Purification Technology

JF - Separation and Purification Technology

M1 - 121693

ER -

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

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Keywords

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