为了对三乙胺气体进行有效、快捷地检测,通过静置法制备了聚苯胺(PANI)半导体材料,利用扫描电子显微镜(SEM)、X射线衍射(XRD)、红外吸收光谱(FT-IR)等测试方法对PANI半导体材料进行了微观结构及表面形态的表征,并对其气敏特性进行测定。通过对三乙胺气体的测定和分析,发现PANI半导体材料对三乙胺气体的敏感性较其他气体高。结果表明:在270℃的工作温度下,PANI半导体传感器对100×10-6三乙胺的灵敏度为74.6,响应时间为9s,恢复时间为6s。在同种气体氛围和相同的温度条件下,连续6次重复实验,PANI半导体材料仍具有一定的稳定性。
In order to detect triethylamine gas effectively and quickly,polyaniline (PANI) semiconductor material was prepared by standing method.The microstructure and surface morphology of the PANI semiconductor material were characterized by scanning electron microscopy (SEM),X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR),and its gas-sensing properties were measured.Through the measurement and analysis of triethylamine gas,it was found that the PANI semiconductor material was more sensitive to triethylamine gas than to other gases.The results showed that at an operating temperature of 270℃,the sensitivity of the PANI semiconductor sensor to 100×10-6 triethylamine was 74.6,with a response time of 9s and a recovery time of 6s.Under the same gas atmosphere and the same temperature conditions,the PANI semiconductor material remained a certain stability after six consecutively repeated experiments.
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基金资助
国家自然科学基金(21703165);陕西省科技计划项目(2021GY-122和2021KW-12)
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