Ag/ZnO多孔网络结构乙醇气体传感器  

Ethanol Gas Sensor Based on Ag/ZnO Porous Network Structure

作　　者：吴子见 韩帅[1] 文政 田永涛[1] 李新建[1] WU Zijian;HAN Shuai;WEN Zheng;TIAN Yongtao;LI Xinjian(School of Physics and Engineering, Zhengzhou University, Zhengzhou 450001 , China)

机构地区：[1]郑州大学物理工程学院,河南郑州450001

出　　处：《郑州大学学报（理学版）》2017年第4期71-75,共5页Journal of Zhengzhou University:Natural Science Edition

基　　金：国家自然科学基金项目(11054331;61605174;11604302);河南省教育厅高等学校重点项目(15A140040)

摘　　要：采用一步水溶液法在带有银电极的Al_2O_3陶瓷片上合成了ZnO纳米片网络结构.400℃退火30 min后,纳米片变为由纳米颗粒组成的多孔结构,形成ZnO多孔网络结构.利用光还原法成功负载Ag纳米颗粒,合成了Ag/ZnO多孔网络复合结构.利用静态配气法测试ZnO和Ag/ZnO多孔网络结构传感器的气敏性质,两种传感器的最佳工作温度分别为350℃和250℃,对体积分数为50×10^(-6)的乙醇的灵敏度分别为14.0和20.3.结果表明,Ag负载不仅提高了ZnO多孔网络结构传感器的灵敏度,而且降低了传感器的最佳工作温度.ZnO nanosheet network was synthesized on A1203 ceramic wafer with Ag electrode by one-step aqueous solution method. The nanosheets became porous structures composed of nanoparticles after an-nealing 30 min at 400 °C . Subsequently, Ag nanoparticles were loaded on ZnO porous network structures by photoreduction method. The gas sensing properties of ZnO and Ag/ZnO sensors for ethanol were inves-tigated at the optimal operating temperature of 350 °C and 250 °C respectively. The sensitivities of bare ZnO and Ag/ZnO porous network structures were 14. 0 and 20. 3. The compositing of Ag nanoparticles enhanced response of ZnO porous network structure sensor and decreased the operating temperature of sensor.

关 键 词：Ag/ZnO多孔网络结构 乙醇 气体传感器 

分 类 号：TB321[一般工业技术—材料科学与工程]