Adsorption and Catalytic Oxidation of Methane by Indium Oxide Sensors Doped with Platinum
Differential scanning calorimetry and X-ray photoelectron spectroscopy were used to investigate the mechanism of methane interaction with platinum-doped indium oxide surface. It was shown that sorption processes have a significant impact on the sensor response at the operating temperatures below 370...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sumy State University
2016-11-01
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| Series: | Журнал нано- та електронної фізики |
| Subjects: | |
| Online Access: | http://jnep.sumdu.edu.ua/download/numbers/2016/4/articles/jnep_2016_V8_04016.pdf |
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| Summary: | Differential scanning calorimetry and X-ray photoelectron spectroscopy were used to investigate the mechanism of methane interaction with platinum-doped indium oxide surface. It was shown that sorption processes have a significant impact on the sensor response at the operating temperatures below 370 С for doped Pt/In2O3 and below 500 С for In2O3-based sensors. Above the critical temperatures the sensor response is dominated by the catalytic oxidation of methane. The operating temperature of sensors was decreased on 80 С by doping of the material with Pt 0.5 wt.%. Thus formed PtxIny clusters have a significant effect on the In¬2O3 catalytic properties. The developed sensors demonstrated high sensitivity, small operating parameters range, and low consuming power together with simple production technology. |
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| ISSN: | 2077-6772 |