期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 15, 页码 6284-6288出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201915797
关键词
graphene oxide; hydrogen separation; hydroxy soldalite; membranes; nanocrystals
资金
- Thousand Talents Program for Foreign Experts [WQ20152100284]
- National Natural Science Foundation of China [21991091, U1862118, 21501198, 21601205, 21771193]
- Taishan Scholar Foundation [ts201511019]
- Fundamental Research Funds for the Central Universities [18CX02047A, 18CX07001A, 18CX05018A]
- PetroChina Innovation Foundation [2019D-5007-0411]
- Key Research and Development Projects of Shandong Province [2019JZZY010331]
Thin membranes (900 nm) were prepared by direct transformation of infiltrated amorphous precursor nanoparticles, impregnated in a graphene oxide (GO) matrix, into hydroxy sodalite (SOD) nanocrystals. The amorphous precursor particles rich in silanols (Si-OH) enhanced the interactions with the GO, thus leading to the formation of highly adhesive and stable SOD/GO membranes via strong bonding. The cross-linking of SOD nanoparticles with the GO in the membranes promoted both the high gas permeance and enhanced selectivity towards H-2 from a mixture containing CO2 and H2O. The SOD/GO membranes are moisture resistance and exhibit steady separation performance (H-2 permeance of about 4900 GPU and H-2/CO2 selectivity of 56, with no degradation in performance during the test of 50 h) at high temperature (200 degrees C) under water vapor (4 mol %).
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