CuO/ZnO复合纳米结构的制备及其气敏性能研究  

reparation and Gas-sensing Performance of CuO/ZnO Composite Nanostructures

作　　者：魏雪纯 陈星佳 杜锐 牛晓娟[1] 涂亚芳[1] 付秋明[2] WEI Xuechun;CHEN Xingjia;DU Rui;NIU Xiaojuan;TU Yafang;FU Qiuming(School of Optoelectronic Materials&Technology,Jianghan University,Wuhan 430056,Hubei,China;School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,Hubei,China)

机构地区：[1]江汉大学光电材料与技术学院,湖北武汉430056 [2]武汉工程大学材料科学与工程学院,湖北武汉430205

出　　处：《江汉大学学报（自然科学版）》2022年第1期19-26,共8页Journal of Jianghan University：Natural Science Edition

基　　金：国家自然科学基金资助项目(11304124)。

摘　　要：用简单的一步水热法合成了CuO/ZnO复合纳米结构,通过改变溶液中Cu离子的浓度得到不同CuO含量的样品。用扫描电镜、X射线衍射仪等表征了样品的形貌和结构,用智能气敏分析仪测试了样品对乙醇气体的响应特性。结果表明,相对纯ZnO,CuO/ZnO复合纳米结构对乙醇气体的响应有明显的增强。溶液中Cu离子与Zn离子摩尔比为3∶5时,合成样品的气敏性能最好,它在最佳工作温度200℃下对体积浓度为100×10^(-6)的乙醇的灵敏度为55.3。这种气敏性能的显著增强可以归因于样品比表面积的提高和p-n结的形成。We fabricated CuO/ZnO composite nanostructures using an easy one-step hydrothermal method.Samples with different CuO contents were grown by changing the concentration of Cu ions in the reaction solution.The structure and morphology of the samples were tested by scanning electron microscope,X-ray diffraction,and other techniques.We tested the responses of the samples to ethanol gas by an intelligent gas sensing analyzer.The results indicated that the sensitivity of CuO/ZnO composite nanostructures to ethanol gas was significantly enhanced compared with pure ZnO.When the molar ratio of copper ion to zinc ion in the reaction solution was 3 to 5,the gas-sensing performance of the synthesized sample reached the best,and its sensitivity to 100×10^(-6) ethanol was 55.3 at the optimum working temperature of 200℃.The increased gas sensitivity can be ascribed to the higher specific surface area and p-n junction formation.

关 键 词：CuO/ZnO复合纳米结构 一步水热法 气敏性能 

分 类 号：O472[理学—半导体物理]