Preparation of mono-dispersed titanium oxide-octadecylamine hybrid spherical particles in the submicron size range

Kota Shiba, Ken Onaka, Makoto Ogawa

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Well-defined titanium oxide-octadecylamine hybrid spherical particles (coefficient of variation (CV) ranged from 4 to 12%) were synthesized by sol-gel reactions with the aid of a flow reactor. The present synthesis consisted of two parts; (1) the initial stage of the reaction, which mainly concerned hydrolysis of titanium tetraisopropoxide (TTIP) and condensation, was conducted in the flow reactor, and then, (2) the solution after passing through the flow reactor was mixed with octadecylamine (ODA) in an aqueous 2-propanol mixture for the growth of titanium oxide-ODA hybrid particles. As for the initial stage, fast flow (2.5 to 40 mL min -1) resulted in the formation of products with narrow particle size distribution (CV 4 to 7%), while slow flow (0.5 mL min -1) led to the polydispersed particle formation (CV 27%) probably due to the growth/aggregation that occurred in the flow reactor. The particle size varied from ca. 70 to 900 nm by varing the composition of the batch reaction (the second step).

Original languageEnglish
Pages (from-to)1343-1349
Number of pages7
JournalRSC Advances
Volume2
Issue number4
DOIs
Publication statusPublished - 2012 Feb 21

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Titanium oxides
Propanol
Particle size analysis
Sol-gels
Condensation
Hydrolysis
Agglomeration
2-Propanol
Titanium
Particle size
Chemical analysis
stearylamine
titanium dioxide

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Preparation of mono-dispersed titanium oxide-octadecylamine hybrid spherical particles in the submicron size range. / Shiba, Kota; Onaka, Ken; Ogawa, Makoto.

In: RSC Advances, Vol. 2, No. 4, 21.02.2012, p. 1343-1349.

Research output: Contribution to journalArticle

Shiba, Kota ; Onaka, Ken ; Ogawa, Makoto. / Preparation of mono-dispersed titanium oxide-octadecylamine hybrid spherical particles in the submicron size range. In: RSC Advances. 2012 ; Vol. 2, No. 4. pp. 1343-1349.
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