Improvement of In<sub>2</sub>O<sub>3</sub>-Based CO Sensor by Using Surface Modifiers
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- Yamaura Hiroyuki
- Kyushu University
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- Tamaki Jun
- Ritsumeikan University
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- Moriya Kouji
- Osaka Gas Co. Ltd.
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- Miura Norio
- Kyushu University
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- Yamazoe Noboru
- Kyushu University
Bibliographic Information
- Other Title
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- 表面修飾剤による酸化インジウム系素子のCO検知特性の改善
- ヒョウメン シュウショクザイ ニヨル サンカ インジウムケイ ソシ ノ CO
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Abstract
Aiming at developing a semiconductor CO sensor applicable to the safety control of gas appliances, we carried out an extensive material search for promoters to In2O3-based elements. Among the elements added (0.5 wt%) with each of 12 transition metal oxides, the Co3O4-added one was outstanding in sensitivity and selectivity to CO at 200°C. Remarkably the sensing properties of this element could be improved further by the addition of Au (0.04 wt%). The doubly promoted element, Au (0.04 wt%)-Co(0.5 wt%)-In2O3, gave excellent characteristics in sensitivity to CO, selectivity to CO over H2 and other selected gases, and response rates at 250°C. The promoting effects of the additives were shown to originate from the proper enhancement of catalytic activity for CO oxidation.
Journal
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- IEEJ Transactions on Sensors and Micromachines
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IEEJ Transactions on Sensors and Micromachines 118 (2), 100-105, 1998
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390282679439421824
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- NII Article ID
- 10004833144
- 10004834140
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- NII Book ID
- AN1052634X
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- ISSN
- 13475525
- 13418939
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- NDL BIB ID
- 4392291
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed