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Optical recognition of CO and H2 by use of gas-sensitive Au–Co3O4 composite films
Abstract
Gold–cobalt oxide (Au–Co 3 O 4 ) composite films have been prepared by the sputter-deposition of gold onto a glass plate substrate followed by pyrolysis of spin-coated cobalt 2-ethylhexanoate. The films comprise small Au particles and Co 3 O 4 nanocrystals, and exhibit different and independent optical responses to CO and H 2 in air. Carbon monoxide caused only a decrease in absorbance, while H 2 caused both a decrease and an increase in absorbance at different wavelengths. Among solid-state gas sensor materials, this Au–Co 3 O 4 composite film is probably the first example of an inorganic material which can be used for the recognition of CO and H 2 molecules through optical absorbance changes.
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Citations
Cited by
Gold-catalysed oxidation of carbon monoxide
Bond, G. C., & Thompson, D. T. (2000) · Gold Bulletin · doi:10.1007/bf03216579 · Cited by 914
Song, K., Cho, E., & Kang, Y.-M. (2015) · ACS Catalysis · doi:10.1021/acscatal.5b01196 · Cited by 112
Metadata
- Authors
- Ando, M., Kobayashi, T., Iijima, S., & Haruta, M.
- Venue
- Journal of Materials Chemistry
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 1997
- Volume
- 7
- Issue
- 9
- Pages
- 1779-1783
- ISSN
- 0959-9428 (ISSN-L)
- 1364-5501
- OpenAlex
- W1970126077
- Cited by
- 208
- References
- 0
- FWCI
- 1.51
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ando, M., Kobayashi, T., Iijima, S., & Haruta, M. (1997). Optical recognition of CO and H2 by use of gas-sensitive Au–Co3O4 composite films. Journal of Materials Chemistry. https://doi.org/10.1039/a700125h
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