氧化锌一维纳米棒的低温制备及其气敏性能  

Low-temperature Synthesis and Gas Sensor Properties of One Dimensional ZnO Nanorods

作　　者：樊慧庆[1,2] 马龙涛 黄丽梅 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072 [2]西北工业大学材料学院,陕西西安710072

出　　处：《郑州大学学报（工学版）》2016年第3期52-55,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(51172187);高校博士点基金资助项目(20116102130002)

摘　　要：采用低温水热法合成了氧化锌(Zn O)一维纳米棒,通过X射线衍射(XRD)和扫描电子显微镜(SEM)及高分辨透射电子显微镜(HRTEM)研究了其相结构与形貌,并测试了基于Zn O一维纳米棒所制作的传感器的气敏性能.研究表明,该气体传感器对体积分数为500×10-6的乙醇的检测灵敏度为35.71,对乙醇气体的响应和恢复时间分别约为7 s和9 s,并具有优良气体选择特性,最后,结合电子释放理论解释了其气敏机理.One-dimensional rod-like ZnO nanostructures were synthesized by a low-temperature hydrothermal process. The morphological feature and phase was detected by using x-ray diffraction and scanning electron mi- croscopy. The sensitivity of gas sensors based on the ZnO nanorods can reach 35.71, and cover and recover time can reach up to 7 s and 9 s, respectively, for 500 x 10 -6 ethanol. The selectivity of this gas sensor is also very well. In addition, the mechanism of gas sensing was discussed in the theory of electron liberation.

关 键 词：氧化锌 一维纳米结构 低温合成 气敏传感器 

分 类 号：O621.25[理学—有机化学]