A planar catalytic combustion sensor using nano-crystalline F-doped SnO2 as a supporting material for hydrogen detection |
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| Authors: | Chi-Hwan Han Dae-Ung Hong Jihye Gwak Sang-Do Han |
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| Affiliation: | (1) Photo- & Electro-Materials Research Center, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong, Daejeon, 305-343, Korea |
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| Abstract: | A planar catlytic combustion gas sensor based on Pd/Pt catalyst supported on F-doped SnO2 nano-crystalline materials has been designed and fabricated for hydrogen detection. The sensor consists of platinum heaters
on an alumina plate coated with a catalytic layer and compensating layer. This sensor exhibited better performance than that
of the sensors employing sensing material of Pd/Pt catalyst on γ-Al2O3 and of Pd/Pt catalyst on nano-crystalline SnO2. The detection limit of the sensor at 370 °C is in the concentration range of 0.5–5% (v/v), with an excellent linearity of
signal voltage to the hydrogen gas concentration. |
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| Keywords: | Hydrogen Sensor Catalytic Combustion F-doped SnO2 Pd/Pt Catalyst |
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