Large-scale synthesis of ITO nanoparticles in an alcohol system assisted by acids

Jhon L. Cuya Huaman, Koji Tanoue, Hiroshi Miyamura, Takatoshi Matsumoto, Balachandran Jeyadevan

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Co-precipitation of indium and tin salts in aqueous media followed by heat treatment of the products provides a versatile route to obtain tin-doped indium oxide (ITO) nanopowders in large quantities. However, the high temperature treatment that is needed to obtain well-crystallized powders provokes particle growth through sintering and leads to poor dispersibility. In this study, ITO nanoparticles (NPs) were obtained by dehydration of the (In, Sn) hydroxide precursor and subsequent crystallization of the same in acidified 2-octanol solution under atmospheric conditions and at low reaction temperature, 180 °C. This process yields grams of well-dispersed ITO nanoparticles with an average size of ∼5 nm and a tin content of ∼10%. In addition, pellets made of ITO nanoparticles and annealed at 200 °C under vacuum exhibited a conductivity of 1.3 Ω cm.

Original languageEnglish
Pages (from-to)3421-3428
Number of pages8
JournalNew Journal of Chemistry
Issue number8
Publication statusPublished - 2014 Aug

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Materials Chemistry


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