Abstract
In this work, different ZnO nanostructures are prepared by carbothermal evaporation method on quartz substrates at various deposition temperatures. The mixture powders ZnO/C with 1:1 ratio as a source of materials inserted in the center of furnace tube. The effect of temperature, by keeping constant other parameters, on growth and morphological surface are investigated which is an important parameter for gas sensing. The crystalline structure of Zn is verified by X-ray diffraction and the surface morphology is analyzed by scanning electron microscopy. The results showed that the sensitivity of sensor synthesized at temperature of 500°C and operated at 300°C for 20ppm H2S gas, is 80% with 35s and 390s for recovery and response time, respectively.
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