纳米SnO_2的制备及其酒敏性能研究  

Preparation of Nanosized SnO_2 and Its Alcohol Sensitive Properties

作　　者：娄向东[1] 王晓兵[1] 刘淑萍[1] 贾晓华[1] 梁慧君[1] 

机构地区：[1]河南师范大学化学与环境科学学院河南省环境污染控制重点实验室,河南新乡453007

出　　处：《电子元件与材料》2005年第10期39-41,44,共4页Electronic Components And Materials

基　　金：河南省自然科学基金资助项目(0211062500)

摘　　要：以SnCl4为原料的化学共沉淀法、sol-gel法和以金属Sn粒为原料的溶解–热解法分别制备出纳米SnO2粉体。采用TG-DTA、XRD、TEM等手段对其进行表征,静态配气法测试SnO2的酒敏性能。结果表明:采用溶解–热解法制备的SnO2粒径小于10nm,在210℃的工作温度下,对0.005%的乙醇具有160倍的高灵敏度,响应恢复时间仅1s的优良特点。讨论了影响材料气敏性能的因素。Nanosized SnO2 powders were prepared by chemical coprecipitation and sol-gel methods using SnCl4 as raw material, and dissolution-pyrolysis method using tin metal. Its alcohol sensitive properties were also studied. The materials were analyzed by means of TG-DTA, XRD and TEM. The properties of gas sensitivity to alcohol were measured using distribution in static state. Experimental results show that the SnO2 powders prepared by dissolution-pyrolysis are less than 10 rim, and its sensitivity is 160 times to 0.005% alcohol at 210℃, response-recovery time is only one second. The factors which influence gas sensitive properties of material are discussed in detail.

关 键 词：电子技术 溶解-热解法 SNO2 纳米材料 酒敏性能 

分 类 号：O648[理学—物理化学]