Preparation of nanoporous titania spherical nanoparticles

Kota Shiba, Soh Sato, Takayuki Matsushita, Makoto Ogawa*

*この研究の対応する著者

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Preparation of nanoporous titania particles from well-defined titania-octadecylamine (titania-ODA) hybrid spherical particles with 450 nm in size, which were prepared by the method reported previously (Chem. Commun.; 2009, pp. 6851-6853 [39]; RSC Adv.; 2012, vol. 2, pp. 1343-1349 [40]), was studied. ODA was removed by solvent extraction with acidic ethanol to obtain nanoporous titania particles and subsequent calcination led to the formation of nanoporous titania particles with the nanopore size ranging from 2 to 4 nm depending on the calcination temperature. The as-synthesized titania was amorphous and was transformed into anatase (at around 300 °C) and rutile (at around 600 °C) by the heat treatment. The phase transition behavior was discussed in comparison with that of as-synthesized titania-ODA particles without ODA removal. Spherical particles of titania-ODA hybrids with 70 nm in size were also transformed into nanoporous titania particles composed of anatase crystallites by the washing and calcination at 500 °C for 1 h.

本文言語English
ページ(範囲)317-325
ページ数9
ジャーナルJournal of Solid State Chemistry
199
DOI
出版ステータスPublished - 2013 3月

ASJC Scopus subject areas

  • 凝縮系物理学
  • 無機化学
  • 物理化学および理論化学
  • セラミックおよび複合材料
  • 電子材料、光学材料、および磁性材料
  • 材料化学

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