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

Kota Shiba, Ken Onaka, Makoto Ogawa*

*この研究の対応する著者

研究成果: Article査読

15 被引用数 (Scopus)

抄録

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).

本文言語English
ページ(範囲)1343-1349
ページ数7
ジャーナルRSC Advances
2
4
DOI
出版ステータスPublished - 2012 2月 21

ASJC Scopus subject areas

  • 化学工学(全般)
  • 化学 (全般)

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