Size and size distribution balance the dispersion of colloidal CeO 2 nanoparticles in organic solvents

Toshihiko Arita, Jungwoo Yoo, Yu Ueda, Tadafumi Adschiri

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Colloidal CeO2 nanoparticles (HNPs) stabilized with a decanoic fatty acid self-assembled monolayer (SAM) (decHNPs) showed very good dispersibility, i.e., perfect dispersion in cyclohexane up to 20 wt%. However, the HNPs stabilized with a dodecanoic acid SAM (dodHNPs) did not show good dispersion, i.e., at most 0.2 wt%. Interestingly, when we mixed equal portions of 5 wt% decHNPs in cyclohexane and 2 wt% dodHNPs in cyclohexane, the mixture showed much better dispersion than 1 wt% of dodHNPs in cyclohexane. This might indicate that the size and size distribution of the major components of the HNP solution are the most dominant factors for determining the dispersibility of HNPs in solution.

Original languageEnglish
Pages (from-to)689-693
Number of pages5
JournalNanoscale
Volume2
Issue number5
DOIs
Publication statusPublished - 2010 May 21

ASJC Scopus subject areas

  • Materials Science(all)

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