本文通过水热的方法,合成CuO纳米材料。利用广角X射线衍射(Wide-angle XRD),透射电子显微镜(TEM),并结合氮气吸附(N2 adsorption measurement)等手段,证实这是一种高度结晶的单分散纳米CuO材料。气敏测试表明,CuO纳米晶是一种优异的丙酮气体敏感材料,具有较低的工作温度和较高的丙酮敏感性能。本文中,我们对该现象进行了分析,并提出其可能的机理。
Copper oxide nanocrystals were'prepared via hydrothermal synthesis route. The chemical composition, crystal structure and morphology were characterized by the Wide angle X-ray diffraction (XRD), transmission electron microscope (TEM) and high resolution transmission electron microscope (HRTEM). The gas sensor based on copper oxide nanocrystals could be respond to ppm order of magnitude of acetone gas at reduced working temperature(200℃). A mechanism was also provided to explain the possible correlation between material and property.