传感技术学报2018，Vol.31Issue(2)：163-169,7.DOI:10.3969/j.issn.1004-1699.2018.02.001
PPy-CeO2复合薄膜柔性NO2传感器的制备与气敏特性研究
Preparation and Gas-Sensing Properties Investigation of Flexible NO2 Sensor Based on PPy-CeO2Composite Thin Film
摘要
Abstract
Polypyrrole-cerium dioxide(PPy-CeO2)composite thin film on polyimide(PI)flexible substrate was pre-pared by combining the chemical oxidation polymerization with self-assembly method using pyrrole(Py)as precursor and FeCl3·6H2O as oxidizing agent. The obtained PPy and PPy-CeO2 were characterized and analyzed by Ultravio-let-visible absorption spectrometer(UV-Vis),Fourier transform infrared spectroscopy(FTIR),Scanning electron mi-croscope(SEM),Transmission electron microscope(TEM)and X-ray diffraction(XRD),X ray electron spectroscopy analysis(XPS).The results showed that PPy-CeO2 exhibited a typical core-shell structure. The NO2-sensing proper-ties of pure Ppy and Ppy-CeO2 composite thin film sensors were investigated at room temperature,and the results indicated that the composite thin film sensor showed the superior response characteristics. The sensitivity is 12.6 times larger than that of pure Ppy film one. Furthermore,the Ppy-CeO2 film sensor possessed good repeatability and selectivity. Finally,the NO2-sensingmechanism of Ppy-CeO2 film sensor was analyzed and discussed.关键词
柔性聚酰亚胺(PI)/PPy-CeO2复合薄膜/NO2气体传感器Key words
flexible substrate/PPy-CeO2 composite thin film/NO2 sensor分类
信息技术与安全科学引用本文复制引用
刘雪燕,太惠玲,刘春华,谢光忠,蒋亚东..PPy-CeO2复合薄膜柔性NO2传感器的制备与气敏特性研究[J].传感技术学报,2018,31(2):163-169,7.基金项目
自然科学基金创新群体项目(61421002) （61421002）
自然科学基金项目(61671115) （61671115）
