摘要
以碳球作为牺牲模板,采用水热法制备具有空心球结构的双金属复合纳米材料Zn2SnO4,并采用多壁碳纳米管(multi-wall carbon nanotubes,MWNTs)对其进行掺杂修饰,进而制备出MWNTs/Zn2SnO4纳米复合薄膜传感器件;通过扫描电子显微镜(SEM)对复合敏感薄膜进行表征分析,并在室温下对其开展氨气的敏感特性测试。实验结果表明,该传感器在室温下对氨气具有较好的气敏响应,包括较高的灵敏度、较快的响应-恢复特性、良好的线性度及稳定性等,为气体检测分析与先进传感技术提供了重要手段。
By using carbon spheres as sacrificial templates,the bimetallic composite nanomaterial Zn2 SnO4 with the hollow sphere structure is prepared by the hydrothermal method and doped with the multi-wall carbon nanotubes(MWNTs),and then the MWNTs/Zn2 SnO4 nanocomposite thin film sensor is fabricated.The composite sensitive film is characterized and analyzed by the scanning electron microscope(SEM),and its sensitivity to ammonia is tested at room temperature.The experimental results show that the sensor has good gas sensitivity to ammonia at room temperature,which includes high sensitivity,fast response-recovery characteristics,good linearity and stability,etc.It provides an important means for the gas detection and analysis and the advanced sensing technology.
引文
[1]邹一风,丁喜波,胡逸.氨气泄漏源定位方法研究与监测系统研制[J].中国安全科学学报,2016,26(8):163-168.
[2]朱凯,吉文哲,胡明江,等.车用氨气传感器设计与性能实验[J].仪表技术与传感器,2015(9):20-22.
[3]盛苗苗,范鹏程,于波,等.基于微纳光纤模式干涉仪和石墨烯薄膜的氨气传感器[J].量子电子学报,2017,34(3):379-384.
[4]郭袁俊,李伟,徐世珍,等.氧化锌声表面波气体传感器对氨气的检测[J].实验室研究与探索,2017,36(12):9-12.
[5]张冬至,王东岳,吴语寒,等.基于氧化锌修饰的碳纳米管传感器的可燃气体检测平台开发[J].实验技术与管理,2017,34(2):39-42.
[6]张冬至,吴迪,周兰娟,等.水热合成WO3薄膜乙醇传感器及其检测装置[J].实验技术与管理,2018,35(4):91-94.
[7]刘凤敏,钟铁钢,梁喜双,等.Zn2SnO4气敏材料的共沉淀法制备及其氧化物掺杂改性[J].仪表技术与传感器,2009(增刊1):105-106.
[8] Yang J D,Wang S R,Zhang L P,et al.Zn2SnO4-doped SnO2hollow spheres for phenylamine gas sensor application[J].Sensors and Actuators B:Chemical,2017,239:857-864.
[9] Arafat M M,Ong J Y,Haseeb A S M A.Selectivity shifting behavior of Pd nanoparticles loaded zinc stannate/zinc oxide(Zn2SnO4/ZnO)nanowires sensors[J].Applied Surface Science,2018,435:928-936.
[10]张冬至,王冬瑞,周兰娟,等.纳米TiO2修饰MoS2薄膜湿敏传感器实验研究[J].实验技术与管理,2018,35(2):30-33.
[11]张冬至,夏伯锴,刘润华,等.基于学科交叉背景的碳纳米管薄膜湿敏检测仪制作与实验[J].实验技术与管理,2015,32(7):156-159.