Electrospun ZnO–SnO2 heterojunction belts for hydrogen sensing
نویسندگان
چکیده
Chemiresistive sensors are promising devices for sensing hydrogen gas in a broad range of applications including fuel cells, storage systems, petroleum refinement, and diagnosis oil-insulated transformers. Herein, electrospun ZnO–SnO2 belts (BLs) were synthesized applied as resistive-type layers sensing. The BLs containing 20 mol% Zn relative to Sn showed response (Ra/Rg, Ra: resistance air, Rg: target gas) 6.7, fast speed (3.6 s), distinguishable selectivity toward 5 ppm at 400 °C the presence formaldehyde, methane, ammonia, carbon monoxide, dioxide gases. sensor displayed repeatable when subjected 15 cycles alternate air exposure. A unique performance was attributed their belt morphology, numerous surface pores, smaller crystal size, ZnO/SnO2 heterojunction, ZnO metallization following present synthetic method paves way generating microstructures with diffusion length that overcomes shortcomings non-porous and/or thick materials while providing potential platform reliable enhanced
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ژورنال
عنوان ژورنال: Journal of Materials Science: Materials in Electronics
سال: 2023
ISSN: ['1573-482X', '0957-4522']
DOI: https://doi.org/10.1007/s10854-023-10445-3