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Concentrated colloidal dispersion of decanoic acid self-assembled monolayer protected CeO2 nanoparticles up to 77 wt% in nonpolar organic solvents

Published online by Cambridge University Press:  18 October 2013

Toshihiko Arita ,
Jungwoo Yoo ,
Yu Ueda  and
Tadafumi Adschiri
Toshihiko Arita
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
Jungwoo Yoo
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
Yu Ueda
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
Tadafumi Adschiri
Affiliation:
WPI Research Center: Advanced Institute for Materials Research, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
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Abstract

Self-assembled monolayers (SAMs) of decanoic acids were prepared on cerium oxide nanoparticles (NPs). The dispersion of the NPs was improved by increasing the packing density of decanoic acid SAM on the NPs. Highly concentrated ceria nanofluids more than 22 vol% (about 77 wt%) in cyclohexane and trans-decalin were achieved, according to the criterion to the packing density and chain length of the alkanoic acid of the SAM to disperse the ceria NPs in nonpolar organic solvents proposed previously. Temperature effect on the dispersion was also examined and it was turned out that the dispersion was strongly enhanced with activation of Brownian motion.

Keywords

colloidsurface chemistryself-assembly
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1503: Symposium U – Colloidal Crystals, Quasicrystals, Assemblies, Jammings and Packings , 2013 , mrsf12-1503-u07-06
Copyright
Copyright © Materials Research Society 2013 

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References

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