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Asymmetric high-Tc superconducting gas separation membrane

Title
Asymmetric high-Tc superconducting gas separation membrane
Authors
Jang E.-S.Chang J.-J.Gwak J.Ayral A.Rouessac V.Cot L.Hwang S.-J.Choy J.-H.
Ewha Authors
최진호황성주
SCOPUS Author ID
최진호scopus; 황성주scopus
Issue Date
2007
Journal Title
Chemistry of Materials
ISSN
0897-4756JCR Link
Citation
vol. 19, no. 15, pp. 3840 - 3844
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We have developed new asymmetric high-Tc superconducting (Bi1.85Pb0.35)Sr1.9Ca2.1Cu 3.1O10+δ membrane with high efficiency for nitrogen separation from air. This membrane with controlled pore structure can be prepared by the electrophoretic deposition of colloidal (Bi 1.85Pb0.35)Sr1.9Ca2.1Cu 3.1O10+δ nanosheets on the substrate pellet. The presence of mesopores in the asymmetric membrane plays an important role in achieving high gas selectivity through the enhancement of magnetic interaction between the superconductor membrane and oxygen molecules. Also, we have found that the control of experimental factors like the orientation of magnetic field, temperature, and pressure difference across the sample is of special importance in optimizing the gas selectivity of the membrane. The present results underscore the applicability of the superconductor membrane as a gas separation device. © 2007 American Chemical Society.
DOI
10.1021/cm070656s
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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