期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 136, 期 42, 页码 14686-14689出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja5083602
关键词
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资金
- National Natural Science Foundation of China [21276262, 51402320]
- External Cooperation Program of BIC, Chinese Academy of Science [174433ICYSB2013005]
- Chinese Academy of Science Visiting Professorship for Senior International Scientists [2013T1G0047]
Through layer-by-layer (LBL) deposition of a graphene oxide (GO) suspension on a semicontinuous ZIF-8 layer, we have developed a novel bicontinuous ZIF-8@GO membrane. Since only the gaps between the ZIF-8 crystals are sealed by the GO layer due to capillary forces and covalent bonds, the gas molecules can only permeate through the ZIF-8 micropore system (0.34 nm). Therefore, the ZIF-8@GO membranes show high hydrogen selectivity. At 250 OE C and 1 bar, the mixture separation factors of H-2/CO2, H-2/N-2, H-2/CH4, and H-2/C3H8 are 14.9, 90.5, 139.1, and 3816.6, with H-2 permeances of about 1.3 x 10(-7) mol.m(-2).s(-1).Pa-1, which is promising for hydrogen separation and purification by molecular sieving
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