In、Sn共掺杂ZnO纳米线的制备及其气敏性能研究  

Research on Synthesis and Gas Sensing Properties of ZnO Nanowires Co-doped with In and Sn

作　　者：雷曼[1] 范新会[1] 于灵敏[1] 陈建[1] 韦建松[1] 

机构地区：[1]西安工业大学材料与化工学院,西安710021

出　　处：《西安工业大学学报》2014年第4期331-335,344,共6页Journal of Xi’an Technological University

基　　金：国家自然科学基金(51072156);国家青年基金(50202177);陕西省教育厅自然基金(2013JK0930)

摘　　要：为了改善纯ZnO纳米线的气敏性能,采用物理蒸发法制备出In、Sn共掺杂的ZnO纳米线,利用XRD、SEM、TEM对产物的形貌、结构进行表征,采用CGS-1TP智能气敏分析系统对其进行酒精气敏性能测试.结果表明,制备出的In、Sn共掺杂ZnO纳米线具有六方纤锌矿结构,平均直径约为80nm,In元素与Sn元素的掺杂量分别为0.12%和1.1%.在最佳工作温度225℃条件下,对气体浓度为400ppm的酒精蒸气的灵敏度S(Ra/Rg)为39.06,响应-恢复时间分别为9s和5s,比同等测试条件下纯ZnO纳米线的灵敏度提高63.9%,响应-恢复时间分别缩短1s和2s.In order to improve the gas sensing properties of pure ZnO nanowires ,Zinc oxide nanowires co-doped with In and Sn were synthesized by thermal evaporation method .The morphology ,size and phase structure of In Sn doped ZnO nanowires were characterized by X ray diffraction （XRD） ,electron microscope（SEM） ,and transmission electron microscope（TEM） ,and the ethanol sensing properties have been tested by CGS-1TP intelligent gas sensing analysis system .The results demonstrate ：The nanowires consist of single crystalline w urtzite ZnO crystal ,and the average diameter is about 80 nm . The doping In and Sn atomic ratio is 0 .12% and 1 .1% for the In Sn doped ZnO nanowires .The response （Ra/Rg ） of the prepared In Sn doped ZnO nanowires to 400 ppm ethanol at 225 ℃ is about 39 .06 ,with the response and recovery times being about 9 s and 5 s ,respectively .Compared with the pure ZnO nanowires ,the sensitivity of In Sn doped ZnO nanowires enhance 63 .9% ,and the response and recovery times are shorten by 1 s and 2 s respectively .

关 键 词：热蒸发法 ZNO纳米线 共掺杂 气敏性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程]