Journal ArticleDOI
Nanopillar ZnO gas sensor for hydrogen and ethanol
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TLDR
Aligned zinc oxide nanorods were synthesized directly via a two-step solution approach on an Al2O3 tube, and were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) as mentioned in this paper.Abstract:
Aligned zinc oxide nanorods were synthesized directly via a two-step solution approach on an Al2O3 tube, and were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The zinc oxide nanorods prepared were uniform with diameters of 10–30 nm and lengths about 1.4 μm. The response Sr (= Ra/Rg) of the aligned zinc oxide nanorod sensor reached 18.29 and 10.41 to 100 ppm ethanol and hydrogen, respectively, which was a two-fold increase compared with that reported in literature, demonstrating the potential for developing stable and sensitive gas sensors.read more
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Detection of hazardous volatile organic compounds (VOCs) by metal oxide nanostructures-based gas sensors: A review
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References
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Journal ArticleDOI
In2O3 nanowires as chemical sensors
TL;DR: In this article, an approach to use individual In2O3 nanowire transistors as chemical sensors working at room temperature was presented, which exhibited significantly improved chemical sensing performance compared to existing solid state sensors in many aspects, such as the sensitivity, the selectivity, the response time, and the lowest detectable concentrations.
Journal Article
In2O3 Nanowires as Chemical Sensors
TL;DR: In this paper, an approach to use individual In2O3 nanowire transistors as chemical sensors working at room temperature was presented, which exhibited significantly improved chemical sensing performance compared to existing solid state sensors in many aspects, such as the sensitivity, the selectivity, the response time, and the lowest detectable concentrations.
Journal ArticleDOI
Gas sensitivity of ZnO based thick film sensor to NH3 at room temperature
TL;DR: In this paper, XRD and scanning electron microscopy (SEM) experiments have been conducted for specific sensitivity to ammonia gas in air at room temperature, with a response time of ∼4 s at 30 ppm of ammonia gas.
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Hydrothermal synthesis and gas sensing characters of ZnO nanorods
TL;DR: In this paper, a hydrothermal process with cetyltrimethylammonium bromide (CTAB) and zinc powder at 182 °C was used to produce ZnO nanorods for gas sensors.
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Sensing characteristics of ZnO-based NOx sensor
Naoto Koshizaki,Toshie Oyama +1 more
TL;DR: In this paper, the effect of element doping into ZnO on sensitivity and selectivity to NO x was also studied using co-sputtering technique, and the results showed that rare earth element doping improved sensitivity to NO 2 against NO.