Sol-gel synthesis of inorganic complex fluorides using trifluoroacetic acid

Shinobu Fujihara, Sachiko Ono, Yoko Kishiki, Munehiro Tada, Toshio Kimura

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

A sol-gel method to prepare inorganic complex fluorides, SrAlF5 and BaMgF4 is described. Metal acetates and alkoxide were used as starting materials, and trifluoroacetic acid was used as a fluorine source. The formation of the fluorides was examined using thermal analysis, X-ray diffraction (XRD) and infrared (IR) absorption. The fluorides were formed through the highly exothermic decomposition reaction of trifluoroacetate gels at temperatures around 321-339°C. The heating time necessary to produce SrAlF5 and BaMgF4 powder samples was considerably reduced in the sol-gel process as compared to the solid-state reaction between SrF2 and AlF3 or BaF2 and MgF2. It is also shown that BaMgF4 thin films could be prepared by the sol-gel process using a spin-coating technique. The characteristics of the films were investigated with a field emission scanning electron microscope and a spectrophotometer.

Original languageEnglish
Pages (from-to)65-70
Number of pages6
JournalJournal of Fluorine Chemistry
Volume105
Issue number1
Publication statusPublished - 2000 Jul 1

Fingerprint

Trifluoroacetic acid
Synthetic Chemistry Techniques
Trifluoroacetic Acid
Polymethyl Methacrylate
Fluorides
fluoride
Sol-gel process
Sol-gels
fluorides
gel
Gels
gels
sol-gel processes
acids
acid
synthesis
Coating techniques
Fluorine
Spectrophotometers
alkoxides

Keywords

  • BaMgF
  • Sol-gel method
  • SrAlF
  • Thin film
  • Trifluoroacetic acid

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Sol-gel synthesis of inorganic complex fluorides using trifluoroacetic acid. / Fujihara, Shinobu; Ono, Sachiko; Kishiki, Yoko; Tada, Munehiro; Kimura, Toshio.

In: Journal of Fluorine Chemistry, Vol. 105, No. 1, 01.07.2000, p. 65-70.

Research output: Contribution to journalArticle

Fujihara, S, Ono, S, Kishiki, Y, Tada, M & Kimura, T 2000, 'Sol-gel synthesis of inorganic complex fluorides using trifluoroacetic acid', Journal of Fluorine Chemistry, vol. 105, no. 1, pp. 65-70.
Fujihara, Shinobu ; Ono, Sachiko ; Kishiki, Yoko ; Tada, Munehiro ; Kimura, Toshio. / Sol-gel synthesis of inorganic complex fluorides using trifluoroacetic acid. In: Journal of Fluorine Chemistry. 2000 ; Vol. 105, No. 1. pp. 65-70.
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N2 - A sol-gel method to prepare inorganic complex fluorides, SrAlF5 and BaMgF4 is described. Metal acetates and alkoxide were used as starting materials, and trifluoroacetic acid was used as a fluorine source. The formation of the fluorides was examined using thermal analysis, X-ray diffraction (XRD) and infrared (IR) absorption. The fluorides were formed through the highly exothermic decomposition reaction of trifluoroacetate gels at temperatures around 321-339°C. The heating time necessary to produce SrAlF5 and BaMgF4 powder samples was considerably reduced in the sol-gel process as compared to the solid-state reaction between SrF2 and AlF3 or BaF2 and MgF2. It is also shown that BaMgF4 thin films could be prepared by the sol-gel process using a spin-coating technique. The characteristics of the films were investigated with a field emission scanning electron microscope and a spectrophotometer.

AB - A sol-gel method to prepare inorganic complex fluorides, SrAlF5 and BaMgF4 is described. Metal acetates and alkoxide were used as starting materials, and trifluoroacetic acid was used as a fluorine source. The formation of the fluorides was examined using thermal analysis, X-ray diffraction (XRD) and infrared (IR) absorption. The fluorides were formed through the highly exothermic decomposition reaction of trifluoroacetate gels at temperatures around 321-339°C. The heating time necessary to produce SrAlF5 and BaMgF4 powder samples was considerably reduced in the sol-gel process as compared to the solid-state reaction between SrF2 and AlF3 or BaF2 and MgF2. It is also shown that BaMgF4 thin films could be prepared by the sol-gel process using a spin-coating technique. The characteristics of the films were investigated with a field emission scanning electron microscope and a spectrophotometer.

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