Cu(I/II) Metal–Organic Frameworks Incorporated Nanofiltration Membranes for Organic Solvent Separation
Copper-based metal–organic frameworks (MOFs) with different oxidation states and near-uniform particle sizes have been successfully synthesized. Mixed-matrix polyimide membranes incorporating 0.1–7 wt% of Cu(II) benzene-1,2,5-tricarboxylic acid (Cu(II)BTC), Cu(I/II)BTC and Cu(I) 1,2-ethanedisulfonic...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2020-10-01
|
Series: | Membranes |
Subjects: | |
Online Access: | https://www.mdpi.com/2077-0375/10/11/313 |
id |
doaj-e02a7a446dd7493189c2a14824594f90 |
---|---|
record_format |
Article |
spelling |
doaj-e02a7a446dd7493189c2a14824594f902020-11-25T04:04:22ZengMDPI AGMembranes2077-03752020-10-011031331310.3390/membranes10110313Cu(I/II) Metal–Organic Frameworks Incorporated Nanofiltration Membranes for Organic Solvent SeparationLakshmeesha Upadhyaya0Yu-Hsuan Chiao1S. Ranil Wickramasinghe2Xianghong Qian3Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR 72701, USARalph E Martin Department of Chemical Engineering, University of Arkansas, Fayetteville, AR 72701, USARalph E Martin Department of Chemical Engineering, University of Arkansas, Fayetteville, AR 72701, USADepartment of Biomedical Engineering, University of Arkansas, Fayetteville, AR 72701, USACopper-based metal–organic frameworks (MOFs) with different oxidation states and near-uniform particle sizes have been successfully synthesized. Mixed-matrix polyimide membranes incorporating 0.1–7 wt% of Cu(II) benzene-1,2,5-tricarboxylic acid (Cu(II)BTC), Cu(I/II)BTC and Cu(I) 1,2-ethanedisulfonic acid (EDS) (Cu(I)EDS) MOFs were fabricated via non-solvent-induced phase inversion process. These membranes are found to be solvent resistant and mechanically stable. Liquid phase nanofiltration experiments were performed to separate toluene from n-heptane at room temperature. These membranes demonstrate preferential adsorption and permeation of the aromatic toluene over aliphatic n-heptane. The amount of MOF particles incorporated, the oxidation state of the Cu ion and membrane, and barrier layer thickness have a significant impact on the separation factor. Toluene/heptane separation factor at 1.47, 1.67 and 1.79 can be obtained for membranes incorporating 7 wt% Cu(II)BTC, Cu(I/II)BTC and Cu(I)EDS respectively at room temperature.https://www.mdpi.com/2077-0375/10/11/313metal–organic frameworks (MOFs)mixed-matrix membranessolvent-resistant nanofiltrationtoluene-heptane separationseparation factor |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lakshmeesha Upadhyaya Yu-Hsuan Chiao S. Ranil Wickramasinghe Xianghong Qian |
spellingShingle |
Lakshmeesha Upadhyaya Yu-Hsuan Chiao S. Ranil Wickramasinghe Xianghong Qian Cu(I/II) Metal–Organic Frameworks Incorporated Nanofiltration Membranes for Organic Solvent Separation Membranes metal–organic frameworks (MOFs) mixed-matrix membranes solvent-resistant nanofiltration toluene-heptane separation separation factor |
author_facet |
Lakshmeesha Upadhyaya Yu-Hsuan Chiao S. Ranil Wickramasinghe Xianghong Qian |
author_sort |
Lakshmeesha Upadhyaya |
title |
Cu(I/II) Metal–Organic Frameworks Incorporated Nanofiltration Membranes for Organic Solvent Separation |
title_short |
Cu(I/II) Metal–Organic Frameworks Incorporated Nanofiltration Membranes for Organic Solvent Separation |
title_full |
Cu(I/II) Metal–Organic Frameworks Incorporated Nanofiltration Membranes for Organic Solvent Separation |
title_fullStr |
Cu(I/II) Metal–Organic Frameworks Incorporated Nanofiltration Membranes for Organic Solvent Separation |
title_full_unstemmed |
Cu(I/II) Metal–Organic Frameworks Incorporated Nanofiltration Membranes for Organic Solvent Separation |
title_sort |
cu(i/ii) metal–organic frameworks incorporated nanofiltration membranes for organic solvent separation |
publisher |
MDPI AG |
series |
Membranes |
issn |
2077-0375 |
publishDate |
2020-10-01 |
description |
Copper-based metal–organic frameworks (MOFs) with different oxidation states and near-uniform particle sizes have been successfully synthesized. Mixed-matrix polyimide membranes incorporating 0.1–7 wt% of Cu(II) benzene-1,2,5-tricarboxylic acid (Cu(II)BTC), Cu(I/II)BTC and Cu(I) 1,2-ethanedisulfonic acid (EDS) (Cu(I)EDS) MOFs were fabricated via non-solvent-induced phase inversion process. These membranes are found to be solvent resistant and mechanically stable. Liquid phase nanofiltration experiments were performed to separate toluene from n-heptane at room temperature. These membranes demonstrate preferential adsorption and permeation of the aromatic toluene over aliphatic n-heptane. The amount of MOF particles incorporated, the oxidation state of the Cu ion and membrane, and barrier layer thickness have a significant impact on the separation factor. Toluene/heptane separation factor at 1.47, 1.67 and 1.79 can be obtained for membranes incorporating 7 wt% Cu(II)BTC, Cu(I/II)BTC and Cu(I)EDS respectively at room temperature. |
topic |
metal–organic frameworks (MOFs) mixed-matrix membranes solvent-resistant nanofiltration toluene-heptane separation separation factor |
url |
https://www.mdpi.com/2077-0375/10/11/313 |
work_keys_str_mv |
AT lakshmeeshaupadhyaya cuiiimetalorganicframeworksincorporatednanofiltrationmembranesfororganicsolventseparation AT yuhsuanchiao cuiiimetalorganicframeworksincorporatednanofiltrationmembranesfororganicsolventseparation AT sranilwickramasinghe cuiiimetalorganicframeworksincorporatednanofiltrationmembranesfororganicsolventseparation AT xianghongqian cuiiimetalorganicframeworksincorporatednanofiltrationmembranesfororganicsolventseparation |
_version_ |
1724437076345094144 |