Hydrogen sulfide sensing characteristics of tin oxide sol-derived thin films

Masami Ando, Seiichi Suto, Takahiro Suzuki, Takashi Tsuchida, Chiaki Nakayama, Norio Miura, Noboru Yamazoe

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Porous thin films of SnO2 were prepared on an alumina substrate using hydrothermally synthesized SnO2 sol, to investigate the influences of film-preparation conditions on the microstructure and H2S sensing characteristics of the thin films obtained. The sensitivity and response transient to 5 ppm H2S in air depended significantly on calcination temperature, operating temperature and film thickness. The 0.6 μm-thick SnO2 film calcined at an optimum temperature of 700°C exhibited gas sensitivity (the ratio of electrical resistance in air to that in gas) as high as 550 together with good response transient characteristics to 5 ppm H2S in air at 200°C. The crystallite size of SnO2 as well as the pore size increased uniformly with a rise in calcination temperature, growing to 17.4 nm and 21 nm, at 700°C, respectively. The formation of well-defined large mesopores appears to be responsible for the excellent H2S sensing characteristics.

Original languageEnglish
Pages (from-to)409-414
Number of pages6
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume104
Issue number5
Publication statusPublished - 1996
Externally publishedYes

Fingerprint

Hydrogen Sulfide
hydrogen sulfide
Hydrogen sulfide
Polymethyl Methacrylate
Sols
Tin oxides
tin oxides
transient response
Thin films
roasting
air
thin films
Transient analysis
Calcination
Air
Gases
electrical resistance
Film preparation
operating temperature
gases

Keywords

  • Gas sensor
  • Hydrogen sulfide
  • Microstructure
  • Pore size
  • Sol
  • Thin film
  • Tin oxide

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Ando, M., Suto, S., Suzuki, T., Tsuchida, T., Nakayama, C., Miura, N., & Yamazoe, N. (1996). Hydrogen sulfide sensing characteristics of tin oxide sol-derived thin films. Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, 104(5), 409-414.

Hydrogen sulfide sensing characteristics of tin oxide sol-derived thin films. / Ando, Masami; Suto, Seiichi; Suzuki, Takahiro; Tsuchida, Takashi; Nakayama, Chiaki; Miura, Norio; Yamazoe, Noboru.

In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 104, No. 5, 1996, p. 409-414.

Research output: Contribution to journalArticle

Ando, M, Suto, S, Suzuki, T, Tsuchida, T, Nakayama, C, Miura, N & Yamazoe, N 1996, 'Hydrogen sulfide sensing characteristics of tin oxide sol-derived thin films', Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, vol. 104, no. 5, pp. 409-414.
Ando, Masami ; Suto, Seiichi ; Suzuki, Takahiro ; Tsuchida, Takashi ; Nakayama, Chiaki ; Miura, Norio ; Yamazoe, Noboru. / Hydrogen sulfide sensing characteristics of tin oxide sol-derived thin films. In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan. 1996 ; Vol. 104, No. 5. pp. 409-414.
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