Thermogravimetric study of the sulfurization of TiO2 using CS2

Jhon Cuya; Nobuaki Sato; Katsutoshi Yamamoto; Atsushi Muramatsu

Thermogravimetric study of the sulfurization of TiO₂ using CS₂

Jhon Cuya, Nobuaki Sato, Katsutoshi Yamamoto, Atsushi Muramatsu

多元物質科学研究所・金属資源プロセス研究センター

研究成果: Conference contribution

抄録

Titanium dioxide is the well-known catalyst for the photodecomposition of water in UV region and its nanoparticles show better performance than its bulk materials. Furthermore, partially sulfurized TiO₂ is expected to be chemically stable and have an enhanced photocatalytic activity compared with TiO₂. For this purpose, the sulfurization behavior of TiO₂ nanoparticles was thermogravimetrically (TG) studied by a thermo-balance with a quartz spring using CS₂. From the TG curve of TiO₂ nanoparticles, first, the weight decrease appeared down to around 8 wt% and then sulfurization reaction started at around 500°C at a heating rate of 1°C/min. The weight increase curve showed a maximum of ca 30 wt% at around 750°C and then gradually decreased to ca 12 wt% at 1000°C. This would be caused by the formation of TiS₂ followed by the decomposition of TiS₂ to lower sulfides, such as Ti_1.08S₂ and Ti₃S₄. From the comparison of the sulfurization of TiO₂ nanoparticles with that of anatase, rutile and Ti(OH)₄, it was found that TiO₂ nanoparticles showed a similar behavior to that of Ti(OH)₄.

本文言語	English
ホスト出版物のタイトル	Yazawa International Symposium
ホスト出版物のサブタイトル	Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies
編集者	F. Kongoli, K. Itagaki, C. Yamauchi, H.Y. Sohn, F. Kongoli, K. Itagaki, C. Yamauchi, H.Y. Sohn
ページ	595-601
ページ数	7
出版ステータス	Published - 2003 10月 16
イベント	Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Technologies; Materials Processing Fundamentals and New Technologies - San Diego, CA, United States 継続期間: 2003 3月 2 → 2003 3月 6

出版物シリーズ

名前	Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies
巻	1

Other

Other	Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Technologies; Materials Processing Fundamentals and New Technologies
国/地域	United States
City	San Diego, CA
Period	03/3/2 → 03/3/6

ASJC Scopus subject areas

工学（全般）

他のファイルとリンク

引用スタイル

Cuya, J., Sato, N., Yamamoto, K., & Muramatsu, A. (2003). Thermogravimetric study of the sulfurization of TiO₂ using CS₂. In F. Kongoli, K. Itagaki, C. Yamauchi, H. Y. Sohn, F. Kongoli, K. Itagaki, C. Yamauchi, & H. Y. Sohn (Eds.), Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies (pp. 595-601). (Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies; Vol. 1).

Thermogravimetric study of the sulfurization of TiO₂ using CS₂. / Cuya, Jhon; Sato, Nobuaki; Yamamoto, Katsutoshi その他.

Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies. ed. / F. Kongoli; K. Itagaki; C. Yamauchi; H.Y. Sohn; F. Kongoli; K. Itagaki; C. Yamauchi; H.Y. Sohn. 2003. p. 595-601 (Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies; Vol. 1).

研究成果: Conference contribution

Cuya, J, Sato, N, Yamamoto, K & Muramatsu, A 2003, Thermogravimetric study of the sulfurization of TiO₂ using CS₂. in F Kongoli, K Itagaki, C Yamauchi, HY Sohn, F Kongoli, K Itagaki, C Yamauchi & HY Sohn (eds), Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies. Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies, vol. 1, pp. 595-601, Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Technologies; Materials Processing Fundamentals and New Technologies, San Diego, CA, United States, 03/3/2.

Cuya J, Sato N, Yamamoto K, Muramatsu A. Thermogravimetric study of the sulfurization of TiO₂ using CS₂. In Kongoli F, Itagaki K, Yamauchi C, Sohn HY, Kongoli F, Itagaki K, Yamauchi C, Sohn HY, editors, Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies. 2003. p. 595-601. (Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies).

Cuya, Jhon ; Sato, Nobuaki ; Yamamoto, Katsutoshi その他. / Thermogravimetric study of the sulfurization of TiO₂ using CS₂. Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies. editor / F. Kongoli ; K. Itagaki ; C. Yamauchi ; H.Y. Sohn ; F. Kongoli ; K. Itagaki ; C. Yamauchi ; H.Y. Sohn. 2003. pp. 595-601 (Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies).

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abstract = "Titanium dioxide is the well-known catalyst for the photodecomposition of water in UV region and its nanoparticles show better performance than its bulk materials. Furthermore, partially sulfurized TiO2 is expected to be chemically stable and have an enhanced photocatalytic activity compared with TiO2. For this purpose, the sulfurization behavior of TiO2 nanoparticles was thermogravimetrically (TG) studied by a thermo-balance with a quartz spring using CS2. From the TG curve of TiO2 nanoparticles, first, the weight decrease appeared down to around 8 wt% and then sulfurization reaction started at around 500°C at a heating rate of 1°C/min. The weight increase curve showed a maximum of ca 30 wt% at around 750°C and then gradually decreased to ca 12 wt% at 1000°C. This would be caused by the formation of TiS2 followed by the decomposition of TiS2 to lower sulfides, such as Ti1.08S2 and Ti3S4. From the comparison of the sulfurization of TiO2 nanoparticles with that of anatase, rutile and Ti(OH)4, it was found that TiO2 nanoparticles showed a similar behavior to that of Ti(OH)4.",

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N2 - Titanium dioxide is the well-known catalyst for the photodecomposition of water in UV region and its nanoparticles show better performance than its bulk materials. Furthermore, partially sulfurized TiO2 is expected to be chemically stable and have an enhanced photocatalytic activity compared with TiO2. For this purpose, the sulfurization behavior of TiO2 nanoparticles was thermogravimetrically (TG) studied by a thermo-balance with a quartz spring using CS2. From the TG curve of TiO2 nanoparticles, first, the weight decrease appeared down to around 8 wt% and then sulfurization reaction started at around 500°C at a heating rate of 1°C/min. The weight increase curve showed a maximum of ca 30 wt% at around 750°C and then gradually decreased to ca 12 wt% at 1000°C. This would be caused by the formation of TiS2 followed by the decomposition of TiS2 to lower sulfides, such as Ti1.08S2 and Ti3S4. From the comparison of the sulfurization of TiO2 nanoparticles with that of anatase, rutile and Ti(OH)4, it was found that TiO2 nanoparticles showed a similar behavior to that of Ti(OH)4.

AB - Titanium dioxide is the well-known catalyst for the photodecomposition of water in UV region and its nanoparticles show better performance than its bulk materials. Furthermore, partially sulfurized TiO2 is expected to be chemically stable and have an enhanced photocatalytic activity compared with TiO2. For this purpose, the sulfurization behavior of TiO2 nanoparticles was thermogravimetrically (TG) studied by a thermo-balance with a quartz spring using CS2. From the TG curve of TiO2 nanoparticles, first, the weight decrease appeared down to around 8 wt% and then sulfurization reaction started at around 500°C at a heating rate of 1°C/min. The weight increase curve showed a maximum of ca 30 wt% at around 750°C and then gradually decreased to ca 12 wt% at 1000°C. This would be caused by the formation of TiS2 followed by the decomposition of TiS2 to lower sulfides, such as Ti1.08S2 and Ti3S4. From the comparison of the sulfurization of TiO2 nanoparticles with that of anatase, rutile and Ti(OH)4, it was found that TiO2 nanoparticles showed a similar behavior to that of Ti(OH)4.

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