Thermogravimetric study of the sulfurization of SrTiO3 nanoparticles using CS2

Jhon Cuya, Nobuaki Sato, Katsutoshi Yamamoto, Hideyuki Takahashi, Atsushi Muramatsu

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The sulfurization behavior of SrTiO3 nanoparticles was studied by using a quartz spring-type thermobalance in CS2/N2 atmosphere. The thermogravimetric curves showed the sulfurization of SrTiO 3 nanoparticles occurred at a temperature range from 150 to 750°C accompanied with the maximum weight increase of 20.7%. A mixed sulfide as Sr1.08TiS3 was formed during the sulfurization process, and it showed sulfur loss at higher temperatures forming Sr 1.08TiS3-x as a final product at 1000°C. In contrast, SrTiO3 powders with larger particles size showed sulfurization at temperatures ranging from 550 to 950°C forming Sr1.08TiS 3, and no sulfur loss was observed at higher temperatures. The difference found in the sulfurization behavior was assigned to not only the particle size but also the presence of OH groups in the SrTiO3 nanoparticles. During the sulfurization of calcined SrTiO3 nanoparticles, the removal of OH groups of SrTiO3 was found to produce an increment of the starting temperature of sulfurization.

Original languageEnglish
Pages (from-to)215-221
Number of pages7
JournalThermochimica Acta
Volume419
Issue number1-2
DOIs
Publication statusPublished - 2004 Sep 10

Keywords

  • Carbon disulfide
  • Strontium titanate
  • Strontium titanium sulfide
  • Sulfurization
  • Thermogravimetry

ASJC Scopus subject areas

  • Instrumentation
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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