摘要
采用两步法制备氧化锌纳米片/聚苯胺(ZnO/PANI)复合材料,首先制备ZnO纳米片,然后以此为载体,通过苯胺单体的原位聚合得到最终产物。通过XRD、FTIR、FESEM、氮气吸附-脱附和紫外-可见漫反射对合成材料进行表征,研究了其紫外激发室温气敏性能,分析了可能的紫外激发气敏机理。结果表明,在紫外光激发下,ZnO/PANI复合材料实现了室温检测,乙醇浓度100×10-6(体积分数)时,灵敏度较高达到17.6,响应和恢复时间均在30s以内。
ZnO/PANI composites were synthesized by two-step method, namely, synthesis of ZnO nanosheets and the in-situ chemical oxidative polymerization of aniline.The composites were studied by X-ray power diffraction (XRD), Fourier transform infrared spectrometer(FTIR), field emission scanning electron microscopy(FE-SEM), N2 adsorption-desorption and UV-vis diffuse reflectance.The UV light enhanced gas-sensing properties of the as-prepared composites were investigated, and the gas sensing mechanism of the composites was also proposed.The results show that the gas sensor based on ZnO/PANI shows high sensitivity for ethanol under the irradiation of UV light at room temperature.The sensitivity for 100 ppmv ethanol can reach up to 17.6 at the room temperature, and the response and recovery time are both less than 30 s.
作者
田俊峰
尹志刚
韩光鲁
李臻
杜俊平
TIAN Junfeng;YIN Zhigang;HAN Guanglu;LI Zhen;DU Junping(Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, Zhengzhou 450001, China)
出处
《电子元件与材料》
CAS
CSCD
北大核心
2019年第10期11-15,共5页
Electronic Components And Materials
基金
国家自然科学基金(21606211)
河南省研究生教育优质课程(hnyjs2018kc13)
河南省高等学校重点科研项目(18B430017)
郑州轻工业大学2017年博士科研基金(2017BSJJ034)
关键词
ZnO纳米片
聚苯胺
紫外光
室温
气敏性能
气敏机理
ZnO nanosheet
PANI
UV light
room temperature
gas sensing properties
gas sensing mechanism
