SELECTION OF HIGHLY ACTIVE MATERIAL FOR SEMICONDUCTOR SENSORS OF CARBON MONOXIDE, HYDROGEN AND HYDROCARBONS BASED ON INDIVIDUAL METAL OXIDES.
Authors
Mavjuda Eshkobilova, Zulaikho Smanova, Abdurakhmanov Ergashboy
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In this work, we investigated the catalytic activity of individual metal oxides (CuO, MnO₂, SnO₂, Cr₂O₃, Co₂O₃, ZrO₂, TiO₂, etc.) in the oxidation of carbon monoxide (CO), hydrogen (H₂), and hydrocarbons (methane, n-octane) in order to select the optimal material for semiconductor gas sensors. Experiments were conducted using gas-air mixtures at a controlled temperature of 350 °C and a fixed flow rate. The activity and selectivity of the oxides, as well as their dependence on physical properties, such as the metal–oxygen bond length and band gap, were determined. The results show that CuO, MnO₂, and SnO₂ are the most active oxides for CO oxidation, and ZrO₂ is the most active for the selective detection of H₂. These findings enable the creation of semiconductor sensors with improved operational and metrological characteristics.
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Authors
Mavjuda Eshkobilova, Zulaikho Smanova, Abdurakhmanov Ergashboy
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References:
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