剑状微棒ZnO材料的水热合成与气敏性能研究  

Study on Preparation and Gas Sensing Property of Sword-Like Microrod ZnO Material

作　　者：杨留方[1] 王庆辉[1] 王玉德[2] 

机构地区：[1]云南民族大学云南省高校无线传感器网络重点实验室,云南昆明650031 [2]云南大学佐波传感技术研究中心,云南昆明650091

出　　处：《云南民族大学学报（自然科学版）》2011年第5期409-411,416,共4页Journal of Yunnan Minzu University:Natural Sciences Edition

基　　金：国家民委科研基金(08YN02);云南省高校无线传感器网络重点实验室基金(09ZK05)

摘　　要：以氯化锌(ZnCl2)和25%浓度氨水为原料,CTAB表面活性剂存在时,利用水热法制备了剑状微棒ZnO材料.采用X射线衍射仪和透射电镜等测试手段,对其物相和结构进行了表征.结果表明:此粉体材料结晶良好,直径小于4μm,长度为35μm.利用该材料制成气敏元件,并用静态配气法测试了元件的气敏性能.研究发现:元件在200℃工作温度下,对丙酮气体有很好的灵敏度和选择性及较好的响应恢复特性.并对气敏机理进行了探讨.Using zinc chloride solution and ammonia （25%） as raw materials, with the presence of surfactant （CTAB） , the sword -like microrod ZnO material was synthesized by the hydrothermal method. The phase composition and microstructure of the prepared ZnO material were characterized with XRD and SEM. The results show that the ZnO material possesses a high degree of crystallization, its diameter below 4 p^m. and its length about 30μm. The gas sensing property of gas sensor fabricated with the prepared ZnO material was evaluated via the static volumetric method. At the operating temperature of 200℃, the gas sensor has high sensitivity and selectivity to CH3COCH3. The gas sensing characterization was also discussed.

关 键 词：ZNO 剑状微棒 水热法 气敏性能 

分 类 号：TN304.92[电子电信—物理电子学]