欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
利用漫渍法将ZnO纳米线浸渍于AgNO3溶液中制备了Ag掺杂的ZnO纳米线。借助X射线衍射仪（XRD）和场发射扫描电子显微镜（FESEM）对纳米线的晶体结构和形貌进行了表征。结果表明纳米线既含面心立方结构的Ag又含有六方纤锌矿结构的ZnO。三维网络结构的ZnO纳米线被一层致密的Ag颗粒包裹并在其表面形成了大量的具有高比表面剂的孔洞结构。将纯的和Ag掺杂的ZnO纳米线都作为酒敏传感材料，在酒精浓度为0．001％，工作温度为150～400℃的范围内测试了它们的气敏特性，结果显示，Ag掺杂的ZnO纳米线的酒精灵敏度比纯ZnO纳米线提高了14。在工作温度为350℃的条件下测试了它们的响应-恢复时间。气敏元件的酒敏特性主要归结于表面吸附效应。
英文摘要：
We describe the synthesis of Ag-doped ZnO nanowires by immersing in the AgNO3 solution and their applications to gas sensors. The crystal structure and morphology of the nanowires were characterized by XRD, SEM,respectively. The results show that the obtained Ag-doped ZnO nanowires is composed of hexagonal wurtzite ZnO structure and face-centered cubic Ag structure. The three-dimensional network of ZnO nanowires coated by condensed Ag grains formed a highly porous structure with a high surface to volume ratio. Pure ZnO and Ag-doped ZnO nanowires thick film were tested as the gas sensing material by measuring changes in its electrical resistance upon exposure to 0. 001% alcohol with the working temperature ranging from 150-400%. The measurement indicates that the sensitivity to alcohol is significantly improved 14 by Ag dopant of ZnO nanowires. Moreover, the response and recovery time of the sensors is measured at 350℃. The gas sensitivity to alcohol of the ZnO gas sensors is attributed to surface absorption.
同期刊论文项目
同项目期刊论文
期刊信息
位置：