Preparation of SnO2 whiskers via the decomposition of tin oxalate

Ki Won Kim, Pyeong Seok Cho, Jong Heun Lee, Seong Hyeon Hong

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A new method for preparing SnO2 whiskers by the decomposition of SnC2O4 is suggested. A Whisker-like morphology of a SnC2O4 precipitate was attained via the gradual addition of an oxalic acid solution to a hot SnCl2 aqueous solution (T > 50°C). In comparison, when the solution temperature was either lower than 50°C or when ethanol was used as the solvent, the SnC2O 4 precipitate showed an angular and relatively isotropic morphology. The morphology of the SnC2O4 precipitate remained even after its thermal decomposition into SnO2 at 400°C indicating that SnC2O4 precipitation is a key step in preparing the whiskers. The formation mechanism of SnO2 whiskers was explained by the supersaturation during the precipitation of SnC2O4.

Original languageEnglish
Pages (from-to)895-898
Number of pages4
JournalJournal of Electroceramics
Volume17
Issue number2-4
DOIs
Publication statusPublished - 2006 Dec 1

Fingerprint

Oxalates
Tin
oxalates
Precipitates
precipitates
tin
Decomposition
decomposition
preparation
Oxalic Acid
oxalic acid
Oxalic acid
Supersaturation
supersaturation
thermal decomposition
Pyrolysis
Ethanol
ethyl alcohol
aqueous solutions
Temperature

Keywords

  • Gas sensor
  • Orthorhombic phase
  • SnCO
  • SnO whisker

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Preparation of SnO2 whiskers via the decomposition of tin oxalate. / Kim, Ki Won; Cho, Pyeong Seok; Lee, Jong Heun; Hong, Seong Hyeon.

In: Journal of Electroceramics, Vol. 17, No. 2-4, 01.12.2006, p. 895-898.

Research output: Contribution to journalArticle

Kim, Ki Won ; Cho, Pyeong Seok ; Lee, Jong Heun ; Hong, Seong Hyeon. / Preparation of SnO2 whiskers via the decomposition of tin oxalate. In: Journal of Electroceramics. 2006 ; Vol. 17, No. 2-4. pp. 895-898.
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