Adsorption and Catalytic Oxidation of Methane by Indium Oxide Sensors Doped with Platinum
| Authors | V.V. Golovanov, B.V. Nazarchuk, V.V. Golovanova |
| Affiliations | Center for Innovation Technologies, South-Ukrainian National University, 65000 Odessa, Ukraine |
| Е-mail | alban@te.net.ua |
| Issue | Volume 8, Year 2016, Number 4 |
| Dates | Received 30 June 2016; revised manuscript received 22 November 2016; published online 29 November 2016 |
| Citation | V.V. Golovanov, B.V. Nazarchuk, V.V. Golovanova, J. Nano- Electron. Phys. 8 No 4, 04016 (2016) |
| DOI | 10.21272/jnep.8(4(1)).04016 |
| PACS Number(s) | 82.47.Rs, 68.47.Fg |
| Keywords | Indium оxide, Sensors (3) , Methane, Catalysis (4) , Platinum. |
| Annotation | 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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