Abstract
TiO2 and SnO2 are the well-known sensing materials with a good thermal stability of the former and a high sensitivity of the latter. In this article, a uniform SnO2/TiO2 core shell nanocomposite was prepared by sol gel processing. The sensing properties of all as-fabricated sensors were investigated with different ethanol concentrations and operating temperatures. At the region of low operating temperature (below 220°C), the sensors based on SnO2/TiO2 core shell nanocomposite show improvements in sensing behavior. This result shows the prospect of the stable gas sensors at working temperatures below 220°C.
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