Microstructural optimization of NH2-MIL-125 membranes with superior H2/CO2 separation performance by innovating metal sources and heating modes

Yanwei Sun; Chunshan Song; Xinwen Guo; Sungwon Hong; Jungkyu Choi; Yi Liu

doi:10.1016/j.memsci.2020.118615

Microstructural optimization of NH₂-MIL-125 membranes with superior H₂/CO₂ separation performance by innovating metal sources and heating modes

Yanwei Sun, Chunshan Song, Xinwen Guo, Sungwon Hong, Jungkyu Choi, Yi Liu

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

Metal-organic framework (MOF) membranes have received increasing attention due to their unprecedented potential for energy-efficient gas separation. Compared with other MOF materials (like ZIF), fabrication and microstructural manipulation of high-performance Ti-MOF-based membranes, although being very attractive due to their excellent chemical and thermal stability, remained relatively less investigated due to the limitations of available titanium sources and heating modes. In this study, different Ti sources (TPOT, TiS₂, and MXene) and heating modes (conventional heating, multi-mode microwave heating, and single-mode microwave heating) were examined for the preparation of NH₂-MIL-125 membranes showing diverse microstructures and gas separation performances. The present work revealed that for the first time, MXene, the new two-dimensional Ti carbide, could be used as Ti source for synthesizing MOF membranes. The best performing NH₂-MIL-125 membranes, which were obtained with TiS₂ as the metal source under single-mode microwave heating, exhibited the highest H₂/CO₂ selectivity (ca. 17.2) as well as considerable H₂ permeance (1.7 × 10⁻⁷ mol m⁻² s⁻¹ Pa⁻¹), owing to an enhanced non-thermal effect of single-mode microwave heating and balanced dissolution rate of TiS₂.

Original language	English
Article number	118615
Journal	Journal of Membrane Science
Volume	616
DOIs	https://doi.org/10.1016/j.memsci.2020.118615
Publication status	Published - 2020 Dec 15

Bibliographical note

Funding Information:
This work was supported by National Natural Science Foundation of China (21176231), Liaoning Revitalization Talents Program (XLYC1807084), Thousand Youth Talents Program, the Pennsylvania State University and Technology Innovation Team of Dalian University of Technology (DUT2017TB01) for the financial support.

Funding Information:
This work was supported by National Natural Science Foundation of China ( 21176231 ), Liaoning Revitalization Talents Program ( XLYC1807084 ), Thousand Youth Talents Program , the Pennsylvania State University and Technology Innovation Team of Dalian University of Technology ( DUT2017TB01 ) for the financial support.

Publisher Copyright:
© 2020 Elsevier B.V.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

Epitaxial growth
Metal-organic framework
Microstructure
Microwave heating
Transition metal dichalcogenides

ASJC Scopus subject areas

Biochemistry
General Materials Science
Physical and Theoretical Chemistry
Filtration and Separation

Access to Document

10.1016/j.memsci.2020.118615

Cite this

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title = "Microstructural optimization of NH2-MIL-125 membranes with superior H2/CO2 separation performance by innovating metal sources and heating modes",

abstract = "Metal-organic framework (MOF) membranes have received increasing attention due to their unprecedented potential for energy-efficient gas separation. Compared with other MOF materials (like ZIF), fabrication and microstructural manipulation of high-performance Ti-MOF-based membranes, although being very attractive due to their excellent chemical and thermal stability, remained relatively less investigated due to the limitations of available titanium sources and heating modes. In this study, different Ti sources (TPOT, TiS2, and MXene) and heating modes (conventional heating, multi-mode microwave heating, and single-mode microwave heating) were examined for the preparation of NH2-MIL-125 membranes showing diverse microstructures and gas separation performances. The present work revealed that for the first time, MXene, the new two-dimensional Ti carbide, could be used as Ti source for synthesizing MOF membranes. The best performing NH2-MIL-125 membranes, which were obtained with TiS2 as the metal source under single-mode microwave heating, exhibited the highest H2/CO2 selectivity (ca. 17.2) as well as considerable H2 permeance (1.7 × 10−7 mol m−2 s−1 Pa−1), owing to an enhanced non-thermal effect of single-mode microwave heating and balanced dissolution rate of TiS2.",

keywords = "Epitaxial growth, Metal-organic framework, Microstructure, Microwave heating, Transition metal dichalcogenides",

author = "Yanwei Sun and Chunshan Song and Xinwen Guo and Sungwon Hong and Jungkyu Choi and Yi Liu",

note = "Funding Information: This work was supported by National Natural Science Foundation of China (21176231), Liaoning Revitalization Talents Program (XLYC1807084), Thousand Youth Talents Program, the Pennsylvania State University and Technology Innovation Team of Dalian University of Technology (DUT2017TB01) for the financial support. Funding Information: This work was supported by National Natural Science Foundation of China ( 21176231 ), Liaoning Revitalization Talents Program ( XLYC1807084 ), Thousand Youth Talents Program , the Pennsylvania State University and Technology Innovation Team of Dalian University of Technology ( DUT2017TB01 ) for the financial support. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = dec,

day = "15",

doi = "10.1016/j.memsci.2020.118615",

language = "English",

volume = "616",

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TY - JOUR

T1 - Microstructural optimization of NH2-MIL-125 membranes with superior H2/CO2 separation performance by innovating metal sources and heating modes

AU - Sun, Yanwei

AU - Song, Chunshan

AU - Guo, Xinwen

AU - Hong, Sungwon

AU - Choi, Jungkyu

AU - Liu, Yi

N1 - Funding Information: This work was supported by National Natural Science Foundation of China (21176231), Liaoning Revitalization Talents Program (XLYC1807084), Thousand Youth Talents Program, the Pennsylvania State University and Technology Innovation Team of Dalian University of Technology (DUT2017TB01) for the financial support. Funding Information: This work was supported by National Natural Science Foundation of China ( 21176231 ), Liaoning Revitalization Talents Program ( XLYC1807084 ), Thousand Youth Talents Program , the Pennsylvania State University and Technology Innovation Team of Dalian University of Technology ( DUT2017TB01 ) for the financial support. Publisher Copyright: © 2020 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/12/15

Y1 - 2020/12/15

N2 - Metal-organic framework (MOF) membranes have received increasing attention due to their unprecedented potential for energy-efficient gas separation. Compared with other MOF materials (like ZIF), fabrication and microstructural manipulation of high-performance Ti-MOF-based membranes, although being very attractive due to their excellent chemical and thermal stability, remained relatively less investigated due to the limitations of available titanium sources and heating modes. In this study, different Ti sources (TPOT, TiS2, and MXene) and heating modes (conventional heating, multi-mode microwave heating, and single-mode microwave heating) were examined for the preparation of NH2-MIL-125 membranes showing diverse microstructures and gas separation performances. The present work revealed that for the first time, MXene, the new two-dimensional Ti carbide, could be used as Ti source for synthesizing MOF membranes. The best performing NH2-MIL-125 membranes, which were obtained with TiS2 as the metal source under single-mode microwave heating, exhibited the highest H2/CO2 selectivity (ca. 17.2) as well as considerable H2 permeance (1.7 × 10−7 mol m−2 s−1 Pa−1), owing to an enhanced non-thermal effect of single-mode microwave heating and balanced dissolution rate of TiS2.

AB - Metal-organic framework (MOF) membranes have received increasing attention due to their unprecedented potential for energy-efficient gas separation. Compared with other MOF materials (like ZIF), fabrication and microstructural manipulation of high-performance Ti-MOF-based membranes, although being very attractive due to their excellent chemical and thermal stability, remained relatively less investigated due to the limitations of available titanium sources and heating modes. In this study, different Ti sources (TPOT, TiS2, and MXene) and heating modes (conventional heating, multi-mode microwave heating, and single-mode microwave heating) were examined for the preparation of NH2-MIL-125 membranes showing diverse microstructures and gas separation performances. The present work revealed that for the first time, MXene, the new two-dimensional Ti carbide, could be used as Ti source for synthesizing MOF membranes. The best performing NH2-MIL-125 membranes, which were obtained with TiS2 as the metal source under single-mode microwave heating, exhibited the highest H2/CO2 selectivity (ca. 17.2) as well as considerable H2 permeance (1.7 × 10−7 mol m−2 s−1 Pa−1), owing to an enhanced non-thermal effect of single-mode microwave heating and balanced dissolution rate of TiS2.

KW - Epitaxial growth

KW - Metal-organic framework

KW - Microstructure

KW - Microwave heating

KW - Transition metal dichalcogenides

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