期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 135, 期 47, 页码 17679-17682出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja4080562
关键词
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资金
- National Natural Science Foundation of China [21276262]
- Chinese Academy of Science Visiting Professorship for Senior International Scientists [2013T1G0047]
- Starting Research Fund of Team Talent from NIMTE [Y20808A05]
Inspired by the bioadhesive ability of the marine mussel, a simple, versatile, and powerful synthesis strategy was developed to prepare highly reproducible and permselective molecular sieve membranes by using polydopamine as a novel covalent linker. Attributing to the formation of strong covalent and noncovalent bonds, ZIF-8 nutrients are attracted and bound to the support surface, thus promoting the ZIF-8 nucleation and the growth of uniform, well intergrown, and phase-pure ZIF-8 molecular sieve membranes. The developed ZIF-8 membranes show high hydrogen selectivity and thermal stability. At 150 degrees C and 1 bar, the mixture separation factors of H-2/CO2, H-2/N-2, H-2/CH4, and H-2/C3H8 are 8.9, 16.2, 31.5 and 712.6, with H-2 permeances higher than 1.8 X 10(-7) mol.m(-2).s(-1).Pa-1, which is promising for hydrogen separation and purification.
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