Title: 3D printed MOF-based mixed matrix thin-film composite membranes

Abstract

MOF-based mixed-matrix membranes (MMMs) have attracted considerable attention due to their tremendous separation performance and facile processability. In large-scale applications such as CO₂ separation from flue gas, it is necessary to have high gas permeance, which can be achieved using thin membranes. However, there are only a handful of MOF MMMs that are fabricated in the form of thin-film composite (TFC) membranes. We propose herein the fabrication of robust thin-film composite mixed-matrix membranes (TFC MMMs) using a three dimensional (3D) printing technique with a thickness of 2–3 μm. We systematically studied the effect of casting concentration and number of electrospray cycles on membrane thickness and CO₂ separation performance. Using a low concentration of polymer of intrinsic microporosity (PIM-1) or PIM-1/HKUST-1 solution (0.1 wt%) leads to TFC membranes with a thickness of less than 500 nm, but the fabricated membranes showed poor CO₂/N₂ selectivity, which could be attributed to microscopic defects. To avoid these microscale defects, we increased the concentration of the casting solution to 0.5 wt% resulting in TFC MMMs with a thickness of 2–3 μm which showed three times higher CO₂ permeance than the neat PIM-1 membrane. These membranes represent the first examples of 3D printed TFC MMMs usingmore » the electrospray printing technique.« less

Authors:

Elsaidi, Sameh K.  ^[1];

• Search DOE PAGES for author "Elsaidi, Sameh K."
• Search DOE PAGES for ORCID "0000-0002-8326-6984"

Ostwal, Mayur ^[2]; Zhu, Lingxiang  ^[3];

• Search DOE PAGES for author "Zhu, Lingxiang"
• Search DOE PAGES for ORCID "0000-0001-6077-9579"

Sekizkardes, Ali  ^[3];

• Search DOE PAGES for author "Sekizkardes, Ali"
• Search DOE PAGES for ORCID "0000-0001-5750-0776"

Mohamed, Mona H. ^[4]; Gipple, Michael ^[5]; McCutcheon, Jeffrey R. ^[2]; Hopkinson, David ^[6]

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+ Show Author Affiliations

1. DOE National Energy Technology Laboratory (NETL), Pittsburgh, USA, Oak Ridge Institute for Science and Education, Pittsburgh
2. Connecticut Center for Applied Separations Technology, University of Connecticut, CT, USA, Department of Chemical & Biomolecular Engineering
3. DOE National Energy Technology Laboratory (NETL), Pittsburgh, USA, Leidos Research Support Team, Pittsburgh
4. Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
5. DOE National Energy Technology Laboratory (NETL), Pittsburgh, USA, Deltha, New Orleans
6. DOE National Energy Technology Laboratory (NETL), Pittsburgh, USA

Publication Date:

Mon Jul 26 00:00:00 EDT 2021

Research Org.:

Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States); National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)

Sponsoring Org.:

USDOE Office of Science (SC); National Science Foundation (NSF)

OSTI Identifier:

1810184

Alternate Identifier(s):

OSTI ID: 1905021

Grant/Contract Number:  

SC0014664; CCMI-2001624

Resource Type:

Published Article

Journal Name:

RSC Advances

Additional Journal Information:

Journal Name: RSC Advances Journal Volume: 11 Journal Issue: 41; Journal ID: ISSN 2046-2069

Publisher:

Royal Society of Chemistry (RSC)

Country of Publication:

United Kingdom

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; chemistry