Aging and Heat-treatment of Room-temperature Hydrogen Sensitive Pt-WO<sub>3</sub> Composite Nanoceramics

نویسندگان

چکیده

Abstract Pt-WO 3 composite nanoceramic produced by pressed and sintered with 5 wt% Pt WO nanoparticles has a response multiple of about 80 for 800 ppm H 2 -20% O -N 10 100 at room temperature 40 relative humidity(RH), showing an impressive sensing capacity low concentration hydrogen. However, will show the aging phenomenon mainly rapid decline recovery rate in open air, which limits its application practical equipment. Fortunately, can be reactivated heat treatment 200°C 1 h, thus restoring pre-aging hydrogen sensitivity capacity. This may because refixed some weak-bonds particles to original site.

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ژورنال

عنوان ژورنال: Journal of physics

سال: 2023

ISSN: ['0022-3700', '1747-3721', '0368-3508', '1747-3713']

DOI: https://doi.org/10.1088/1742-6596/2468/1/012045