Highly hydrogen permselective ZIF-8 membranes supported on polydopamine functionalized macroporous stainless-steel-nets
- authored by
- Aisheng Huang, Qian Liu, Nanyi Wang, Jürgen Caro
- Abstract
Inspired by the bio-adhesive ability of the marine mussel, highly hydrogen permselective ZIF-8 membranes were prepared on polydopamine functionalized stainless-steel-nets (SSNs). With polydopamine functionalization of SSNs under mild conditions, the nucleation and growth of well-intergrown ZIF-8 membranes were promoted through the formation of strong non-covalent and covalent bonds, which was helpful to enhance the membrane's separation selectivity while maintaining high permeance. For binary mixtures at 100 °C and 1 bar, the mixture separation factors of H2-CO2, H2-N 2, H2-CH4 and H2-C3H 8, were found to be 8.1, 15.0, 23.2 and 329.7, which by far exceed the corresponding Knudsen coefficients and those of the as-reported ZIF-8 membranes. The ZIF-8 membranes also displayed high permeances, with the H 2 permeance higher than 2.1 × 10-5 mol m -2 s-1 Pa-1 due to the high void volume of the SSNs.
- Organisation(s)
-
Institute of Physical Chemistry and Electrochemistry
- External Organisation(s)
-
Chinese Academy of Sciences (CAS)
- Type
- Article
- Journal
- Journal of Materials Chemistry A
- Volume
- 2
- Pages
- 8246-8251
- No. of pages
- 6
- ISSN
- 2050-7488
- Publication date
- 2014
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- General Chemistry, Renewable Energy, Sustainability and the Environment, General Materials Science
- Sustainable Development Goals
- SDG 7 - Affordable and Clean Energy, SDG 14 - Life Below Water
- Electronic version(s)
-
https://doi.org/10.1039/c4ta00299g (Access:
Closed)
https://doi.org/10.15488/111 (Access: Open)
