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공공누리This item is licensed Korea Open Government License

Title
A strong linear correlation between the surface charge density on Ag nanoparticles and the amount of propylene adsorbed
Author(s)
이정현염민선
Publication Year
2014-03-31
Abstract
The partial positive charge density of the surface of Ag nanoparticles was modulated by an electron acceptor, 7,7,8,8-tetracyanoquinodimethane (TCNQ), to improve their reversible interactions with olefins such as propylene, but not with paraffin. The silver binding energy in Ag NPs, representing the surface charge density, exhibited a maximum at a TCNQ concentration of 0.05 mol% (0.26 molecules per nm2). The amount of propylene adsorbed on the surface of the Ag NPs was strongly correlated with the silver binding energy with a high correlation factor of 0.97. In addition propylenes were found to be adsorbed on the TCNQ-uncovered, vacant sites of Ag NPs according to quantum mechanical calculation. It was therefore concluded that the enhanced interaction between the surface-modulated Ag NPs and propylene is attributable to the high separation performance for olefin뻪araffin mixtures based on selective facilitated olefin transport.
Keyword
nanoparticles; propylene; tcnq
Journal Title
JOURNAL OF MATERIALS CHEMISTRY A
ISSN
2050-7488
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Appears in Collections:
7. KISTI 연구성과 > 학술지 발표논문
URI
https://repository.kisti.re.kr/handle/10580/14257
http://www.ndsl.kr/ndsl/search/detail/article/articleSearchResultDetail.do?cn=NART69306234
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