We have developed a highly sensitive and selective hydrogen
gas sensor based on Pd decorated MnO2 nanowalls. The sensing
is based on the resistance change of the sensor when exposed to hydrogen gas. The sensor shows an excellent response towards the
low as well high detection range of 10–10,000 ppm, respectively, at
a very fast response/recovery time of a few seconds to few minutes.
Fast response, stability, selectivity, low temperature operation and
reproducibility make this sensor excellent as compared to the sensors
reported in the literature. The films are stable over 4 months
and can be used many times without affecting the sensing effi-
ciency. Hence, the application of these films is promising as simple,
robust, and cost-effective for low detection of hydrogen.
We have developed a highly sensitive and selective hydrogengas sensor based on Pd decorated MnO2 nanowalls. The sensingis based on the resistance change of the sensor when exposed to hydrogen gas. The sensor shows an excellent response towards thelow as well high detection range of 10–10,000 ppm, respectively, ata very fast response/recovery time of a few seconds to few minutes.Fast response, stability, selectivity, low temperature operation andreproducibility make this sensor excellent as compared to the sensorsreported in the literature. The films are stable over 4 monthsand can be used many times without affecting the sensing effi-ciency. Hence, the application of these films is promising as simple,robust, and cost-effective for low detection of hydrogen.
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