Sensitivity to hydrogen of sensor materials based on SnO2 promoted with 3d metals |
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| Authors: | I P Matushko V K Yatsimirskii N P Maksimovich N V Nikitina P M Silenko V P Ruchko V B Ishchenko |
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| Institution: | (1) Taras Shevchenko Kyiv National University, Vul. Volodymyrs’ka, 64, Kyiv, 01033, Ukraine;(2) I. N. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Vul. Krzhyzhanivs’kogo, 3, Kyiv, 03142, Ukraine |
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| Abstract: | The sensitivity to hydrogen and the catalytic activity in the oxidation of hydrogen of sensor materials based on tin dioxide
and doped with cobalt, nickel, iron, and copper have been studied. The sensitivity of the sensors and the degree of conversion
of hydrogen pass symbatically through a maximum with increasing quantity of each of the dopants. The results are explained
by the influence of grain boundaries between tin dioxide and the dopants applied during the course of the oxidation reaction
of hydrogen on the sensor material and on the sensitivity of the sensor to H2.
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Translated from Teoreticheskaya i éksperimental’naya Khimiya, Vol. 44, No. 2, pp. 121–125, March–April, 2008. |
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| Keywords: | adsorption-semiconductor sensor hydrogen sensitivity catalysis kinetics |
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