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Cross‐Linking between Sodalite Nanoparticles and Graphene Oxide in Composite Membranes to Trigger High Gas Permeance, Selectivity, and Stability in Hydrogen Separation
Author(s) -
Guo Hailing,
Kong Guodong,
Yang Ge,
Pang Jia,
Kang Zixi,
Feng Shou,
Zhao Lei,
Fan Lili,
Zhu Liangkui,
Vicente Aurélie,
Peng Peng,
Yan Zifeng,
Sun Daofeng,
Mintova Svetlana
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201915797
Subject(s) - permeance , membrane , chemical engineering , graphene , materials science , selectivity , sodalite , oxide , amorphous solid , nanoparticle , nanocomposite , gas separation , chemistry , nanotechnology , organic chemistry , catalysis , zeolite , biochemistry , engineering , metallurgy
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 CO 2 and H 2 O. The SOD/GO membranes are moisture resistance and exhibit steady separation performance (H 2 permeance of about 4900 GPU and H 2 /CO 2 selectivity of 56, with no degradation in performance during the test of 50 h) at high temperature (200 °C) under water vapor (4 mol %).