Hydrothermal routes to prepare nanocrystalline mesoporous SnO2 having high thermal stability

Shinobu Fujihara, Takahiro Maeda, Hirotoshi Ohgi, Eiji Hosono, Hiroaki Imai, Sae Hoon Kim

Research output: Contribution to journalArticle

165 Citations (Scopus)

Abstract

We report simple hydrothermal routes to prepare thermally stable SnO 2 particles having high specific surface areas and mesoporosity. The preparation method includes a new combination of synthetic processes: hydrolysis of tin(IV) chloride at 95°C in the absence of alkaline solutions (aqueous NH3 or NaOH), formation of nanocrystalline SnO2, and subsequent hydrothermal treatments at temperatures between 100 and 200°C. After annealing treatments of the hydrothermally treated SnO 2 particles at 400 or 500°C, their crystallite sizes remained smaller than 7.7 nm and their specific surface areas were still higher than 110 m2/g, indicative of the high thermal stability against particle growth and sintering. Furthermore, mesoporosity evolved with a relatively narrow pore size distribution typically in the range of 3.0-4.3 nm. The effects of the hydrothermal treatment were explained by uniformization of the particle size that was beneficial to the suppression of particle growth.

Original languageEnglish
Pages (from-to)6476-6481
Number of pages6
JournalLangmuir
Volume20
Issue number15
DOIs
Publication statusPublished - 2004 Jul 20

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Specific surface area
Thermodynamic stability
thermal stability
routes
Tin
Crystallite size
Pore size
Chlorides
Hydrolysis
Sintering
Particle size
Annealing
hydrolysis
tin
sintering
Temperature
chlorides
retarding
aqueous solutions
porosity

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Hydrothermal routes to prepare nanocrystalline mesoporous SnO2 having high thermal stability. / Fujihara, Shinobu; Maeda, Takahiro; Ohgi, Hirotoshi; Hosono, Eiji; Imai, Hiroaki; Kim, Sae Hoon.

In: Langmuir, Vol. 20, No. 15, 20.07.2004, p. 6476-6481.

Research output: Contribution to journalArticle

Fujihara, Shinobu ; Maeda, Takahiro ; Ohgi, Hirotoshi ; Hosono, Eiji ; Imai, Hiroaki ; Kim, Sae Hoon. / Hydrothermal routes to prepare nanocrystalline mesoporous SnO2 having high thermal stability. In: Langmuir. 2004 ; Vol. 20, No. 15. pp. 6476-6481.
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