ZnO多级结构的合成及其优秀的酒精传感性能研究  

Synthesis of ZnO Hierarchaical Structure and Its Excellent Gas Sensing Performance

作　　者：阴明利[1] 邹旭明[1] 于灵敏[1] 王党社[1] 

机构地区：[1]西安工业大学理学院,西安710021

出　　处：《西安工业大学学报》2015年第6期489-495,共7页Journal of Xi’an Technological University

基　　金：陕西省教育厅科学研究基金项目(14JK1331);西安工业大学校长基金资助项目(XAGDXJJ-1030)

摘　　要：为避免小尺寸的微/纳米材料发生团聚而导致气体传感器性能下降,利用溶剂热法在室温下合成了纳米针组装的ZnO多级聚集体.采用扫描电子显微镜、透射电子显微镜、X-射线衍射以及X-射线光电子能谱技术对材料进行了表征,提出了用于解释纳米针组装结构形成的生长机制.气敏测试结果表明:多级聚集体传感器对1.0×10-4酒精的气体传感响应高达191mV,响应和恢复时间都仅有12s,探测极限达到了约3.4×10-8.To avoid the performance degradation of gas sensors caused by the agglomeration of the small size micro/nanomaterials,nanoneedle-assembled ZnO hierarchical aggregates are synthesized through a solvothermal method at room temperature.Scanning electron microcopy （SEM）,transmission electron microscope （TEM）,X-ray diffraction （XRD）and X-ray photoelectron spectroscopy （XPS） techniques are used to material characterization,and a possible growth mechanism is proposed to interpret how the nanoneedle-assembled structure is formed.The results of gas sensing test indicate that the response of hierarchical aggregate sensor to 1.0× 10 ^-4 ethanol is as high as 191 mV,both the response and recovery times is only 12 s,and the detection limit is as low as about 3.4×10^ -8 .

关 键 词：ZNO 多级结构 溶剂热 气体传感器 

分 类 号：TN304.21[电子电信—物理电子学] O614.241[理学—无机化学]