Oriented growth of large-area metal-organic framework ZIF-8 membrane for hydrogen separation

authored by: Chunxin Jin, Shuai Liu, Xiaofang Chen, Yanhong Li, Jürgen Caro, Aisheng Huang
Abstract: Optimal orientation is the key factor to optimize the gas separation performance of metal-organic framework (MOF) membranes. However, it is still greatly challenging to prepare large-area oriented MOF membranes for industrial applications. Herein, we prepared compact and (100) oriented zeolitic-imidazolate framework-8 (ZIF-8) membranes with membrane area up to 500 cm² on the graphite substrate via support-induced strategy within 2 h. With membrane thickness of only 620 nm, the (100) oriented ZIF-8 membranes exhibit high gas separation performances due to the reduction of inter-crystalline defects and permeation resistance. At 100 °C and 1 bar, the separation factors of H₂/CO₂, H₂/CH₄ and H₂/C₃H₈ are 18.5, 58.2 and 101.6, respectively, with H₂ permeance of about 160 x 10⁻⁹ mol m⁻² s⁻¹·Pa⁻¹. The different positions of the 500 cm² ZIF-8 membrane show complete consistency in orientation and separation performance, recommending this membrane suitable for future industrial applications. Further, also oriented ZIF-67 and MOF-303 membranes can be consistently prepared by this strategy, confirming its versatility for the preparation of large-area MOF membranes.
Organisation(s): Institute of Physical Chemistry and Electrochemistry
External Organisation(s): East China Normal University
Type: Article
Journal: Journal of membrane science
Volume: 711
No. of pages: 7
ISSN: 0376-7388
Publication date: 11.2024
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Biochemistry, General Materials Science, Physical and Theoretical Chemistry, Filtration and Separation
Electronic version(s): https://doi.org/10.1016/j.memsci.2024.123163 (Access: Closed)

BibTeX

@article{a21e03f3454c476d95de4654a1721de8,
title = "Oriented growth of large-area metal-organic framework ZIF-8 membrane for hydrogen separation",
abstract = "Optimal orientation is the key factor to optimize the gas separation performance of metal-organic framework (MOF) membranes. However, it is still greatly challenging to prepare large-area oriented MOF membranes for industrial applications. Herein, we prepared compact and (100) oriented zeolitic-imidazolate framework-8 (ZIF-8) membranes with membrane area up to 500 cm2 on the graphite substrate via support-induced strategy within 2 h. With membrane thickness of only 620 nm, the (100) oriented ZIF-8 membranes exhibit high gas separation performances due to the reduction of inter-crystalline defects and permeation resistance. At 100 °C and 1 bar, the separation factors of H2/CO2, H2/CH4 and H2/C3H8 are 18.5, 58.2 and 101.6, respectively, with H2 permeance of about 160 x 10−9 mol m−2 s−1·Pa−1. The different positions of the 500 cm2 ZIF-8 membrane show complete consistency in orientation and separation performance, recommending this membrane suitable for future industrial applications. Further, also oriented ZIF-67 and MOF-303 membranes can be consistently prepared by this strategy, confirming its versatility for the preparation of large-area MOF membranes.",
keywords = "Hydrogen separation, Metal-organic frameworks membranes, Oriented growth, ZIF-8 membrane",
author = "Chunxin Jin and Shuai Liu and Xiaofang Chen and Yanhong Li and J{\"u}rgen Caro and Aisheng Huang",
note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",
year = "2024",
month = nov,
doi = "10.1016/j.memsci.2024.123163",
language = "English",
volume = "711",
journal = "Journal of membrane science",
issn = "0376-7388",
publisher = "Elsevier",
}