Articles | Volume 3, issue 2
J. Sens. Sens. Syst., 3, 273–280, 2014
https://doi.org/10.5194/jsss-3-273-2014

Special issue: Advanced functional materials for environmental monitoring...

J. Sens. Sens. Syst., 3, 273–280, 2014
https://doi.org/10.5194/jsss-3-273-2014

Regular research article 30 Oct 2014

Regular research article | 30 Oct 2014

Catalytic and thermal characterisations of nanosized PdPt / Al2O3 for hydrogen detection

T. Mazingue et al.

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Latest update: 26 Jan 2022
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Short summary
In this article, we propose detecting hydrogen (H2) traces at room temperature with nanostructured PdPt/Al2O3 catalysts. We measure the temperature rise during the exothermic oxidation of H2 by the catalyst. An appropriate formulation of about 1 mg of PdPt/Al2O3 leads to reversible thermal responses of 3°C in only 5 s. We show that this active material is a promising candidate for autonomous and reversible passive transducers for H2 sensors working at room temperature in explosive atmospheres.