Dispersion stabilization of conductive transparent oxide nanoparticles

We present the preparation of stable dispersion made of ITO and ATO nanoparticles. Titanate coupling agent and β-diketones were used as dispersants. Batch or continuous type milling machine were applied for the attrition process. ▪ A colloidal dispersion of indium tin oxide (ITO) nanoparticles in an...

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Published inColloids and surfaces. A, Physicochemical and engineering aspects Vol. 336; no. 1; pp. 88 - 98
Main Authors Cho, Young-Sang, Kim, Hyang-Mi, Hong, Jeong-Jin, Yi, Gi-Ra, Jang, Sung Hoon, Yang, Seung-Man
Format Journal Article
LanguageEnglish
Published Elsevier B.V 20.03.2009
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Summary:We present the preparation of stable dispersion made of ITO and ATO nanoparticles. Titanate coupling agent and β-diketones were used as dispersants. Batch or continuous type milling machine were applied for the attrition process. ▪ A colloidal dispersion of indium tin oxide (ITO) nanoparticles in an organic solvent was achieved using a milling process in which β-diketones or titanate coupling agents were used as a dispersing agent. Isopropyl tri( N-ethylenediamino)ethyl titanate and 2,4-pentanedione were found to be the most suitable dispersants for stabilizing ITO nanoparticles in a mixed organic solvent. The secondary particle size of the colloidal ITO dispersion was markedly affected by operational parameters in the milling process. Stable dispersions of antimony-doped tin oxide (ATO) nanoparticles in organic solvent, using β-diketones as dispersants, were also prepared. The stable dispersions of ITO and ATO nanoparticles were used as conductive transparent film coatings on cathode-ray tube panels. We found that the electrical conductivity of the film coating was affected by the boiling point of the dispersion stabilizers.
ISSN:0927-7757
1873-4359
DOI:10.1016/j.colsurfa.2008.11.014