کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1490348 | 992323 | 2012 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Highly sensitive and selective ethanol sensor based on micron-sized zinc oxide porous-shell hollow spheres Highly sensitive and selective ethanol sensor based on micron-sized zinc oxide porous-shell hollow spheres](/preview/png/1490348.png)
Zinc oxide (ZnO) porous-shell hollow spheres (PHS) were prepared by thermally oxidizing high-purity zinc powder in an oxygen-containing atmosphere, and its ethanol gas sensing properties were measured in the concentration range of 10–400 ppm. At the optimum operating temperature of 350 °C, a sensitivity of 0.25/ppm was obtained and the response–concentration curve was of high linearity. The response and recovery times were measured to be ∼5–12 s and 8–13 s, respectively. The sensor was proved to be highly selective to ethanol. Our results indicate that ZnO PHS might be a promising material for fabricating practical ethanol sensors.
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► A kind of micron-sized ZnO porous-shell hollow spheres (PHS) was prepared.
► The gas sensors based on ZnO PHS were highly sensitive and selective to ethanol.
► ZnO PHS might be promising for fabricating practical ethanol sensors.
Journal: Materials Research Bulletin - Volume 47, Issue 9, September 2012, Pages 2178–2181