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Effects of surface charging treatment on outer and inner surfaces of a nanoporous carbon

Published online by Cambridge University Press:  31 January 2011

Weiyi Lu ,
Aijie Han ,
Taewan Kim ,
Hyuck Lim  and
Yu Qiao
Weiyi Lu
Affiliation:
Department of Structural Engineering, University of California–San Diego, La Jolla, California 92093-0085
Aijie Han
Affiliation:
Department of Chemistry, University of Texas–Pan America, Edinburg, Texas 78539
Hyuck Lim
Affiliation:
Program of Materials Science & Engineering, University of California–San Diego, La Jolla, California 92093
Yu Qiao*
Affiliation:
Department of Structural Engineering, University of California–San Diego, La Jolla, California 92093-0085; and Program of Materials Science & Engineering, University of California–San Diego, La Jolla, California 92093
*
a) Address all correspondence to this author. e-mail: yqiao@ucsd.edu
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Abstract

As the outer surface of a nanoporous carbon is treated with 16-mercaptohexadecanoic acid, the carbon particles can form a stable suspension in water. When the water phase is compressed, the liquid infiltration behavior in the nanopores becomes significantly different from that of untreated material, suggesting that the inner surface is also modified. After the treatment, the infiltration pressure does not decrease. Therefore, the surface-chain configurations at the inner and outer surfaces must be different, which explains the variations in infiltration pressure and volume.

Keywords

CInfiltration (assembly)Surface reaction
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 8 , August 2009 , pp. 2471 - 2475
Copyright
Copyright © Materials Research Society 2009

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