Thermogravimetric study of the sulfurization of SrTiO3 nanoparticles using CS2

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

doi:10.1016/j.tca.2004.01.033

Thermogravimetric study of the sulfurization of SrTiO₃ nanoparticles using CS₂

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

Tohoku University

Research output: Contribution to journal › Article › peer-review

10 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 Sr_1.08TiS₃ was formed during the sulfurization process, and it showed sulfur loss at higher temperatures forming Sr _1.08TiS_3-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 Sr_1.08TiS 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 language	English
Pages (from-to)	215-221
Number of pages	7
Journal	Thermochimica Acta
Volume	419
Issue number	1-2
DOIs	https://doi.org/10.1016/j.tca.2004.01.033
Publication status	Published - 2004 Sept 10

Keywords

Carbon disulfide
Strontium titanate
Strontium titanium sulfide
Sulfurization
Thermogravimetry

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10.1016/j.tca.2004.01.033

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title = "Thermogravimetric study of the sulfurization of SrTiO3 nanoparticles using CS2",

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.",

keywords = "Carbon disulfide, Strontium titanate, Strontium titanium sulfide, Sulfurization, Thermogravimetry",

author = "Jhon Cuya and Nobuaki Sato and Katsutoshi Yamamoto and Hideyuki Takahashi and Atsushi Muramatsu",

note = "Funding Information: One of the authors, J.C., thanks the Ministry of Education, Culture, Sports, Science and Technology of Japan, for financial support through the Monbukagakusho Scholarship. This work was partially supported by the Grant-in Aid for Scientific Research(s) No. 14103016 from the Ministry of Education, Culture, Sports, Science and Technology of Japan.",

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AU - Cuya, Jhon

AU - Sato, Nobuaki

AU - Yamamoto, Katsutoshi

AU - Takahashi, Hideyuki

AU - Muramatsu, Atsushi

N1 - Funding Information: One of the authors, J.C., thanks the Ministry of Education, Culture, Sports, Science and Technology of Japan, for financial support through the Monbukagakusho Scholarship. This work was partially supported by the Grant-in Aid for Scientific Research(s) No. 14103016 from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

PY - 2004/9/10

Y1 - 2004/9/10

N2 - 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.

AB - 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.

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KW - Strontium titanate

KW - Strontium titanium sulfide

KW - Sulfurization

KW - Thermogravimetry

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Thermogravimetric study of the sulfurization of SrTiO₃ nanoparticles using CS₂

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