Ag掺杂SnO_2纳米纤维的制备及其气敏特性研究  

Preparation and Gas Sensing Properies of Ag-Doped SnO_2 Nanofibers by Electrospinning

作　　者：宁玲玲[1] 贾建峰[1] 赵明岗[1] 王新昌[1] 李新建[1] 

机构地区：[1]郑州大学物理工程学院材料物理教育部重点实验室,郑州450052

出　　处：《传感技术学报》2011年第5期634-637,共4页Chinese Journal of Sensors and Actuators

基　　金：国家教育部科学技术研究重点项目(208084);河南省重大攻关项目(082101510007)

摘　　要：以聚乙烯醇(PVA)和SnC l2.2H2O为原料采用静电纺丝技术制备纯SnO2及Ag掺杂SnO2纳米纤维。经700℃退火烧结后制得了连续多孔的SnO2纳米纤维。研究了Ag的掺杂对SnO2纳米纤维的C2H2气体敏感性能的影响,结果表明Ag的掺杂对SnO2纳米纤维的C2H2气体敏感性能具有明显的影响,在Ag掺杂量为8 at%时SnO2纳米纤维对C2H2气体具有最佳的气敏特性,在C2H2气体的体积分数为5 000 ppm温度为200℃时下的灵敏度为166.27。Pure and Ag doped SnO2 nanofibers have been successfully synthesized by electrospinning of the poly（vinyl alcohol）（PVA）/ SnCl2·2H2O composite precursor.After annlealing at 700 ℃,porous SnO2 nanofibers are obtained.The effects of Ag doping on C2H2 sensing properties were investigated.The results show that the C2H2 sensing properties of SnO2 nanofibers are effectively improved by Ag doping and the optimal doping concentration is 8 at %.The sensitivity is up to 166.27 for the sensors based on 8 at % Ag-doped SnO2 nanofibers when the sensor is exposed to 5000 ppm C2H2 at 200 ℃.

关 键 词：SnO2纳米纤维 气敏特性 静电纺丝 掺杂 

分 类 号：TP212.6[自动化与计算机技术—检测技术与自动化装置]