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首页> 外文期刊>Journal of Applied Polymer Science >Room temperature CO sensing by polyaniline/Co3O4 nanocomposite
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Room temperature CO sensing by polyaniline/Co3O4 nanocomposite

机译：聚苯胺/ Co3O4纳米复合材料的室温CO感测

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摘要

Polyaniline/cobalt oxide (PANI/Co3O4) nanocomposites have been investigated for their sensitivity towards carbon monoxide (CO) gas at room temperature. The Co3O4 nanoparticles were prepared by ultrasound assisted coprecipitation method and then incorporated into the PANI matrix. Fourier transform infrared spectroscopy and ultraviolet-visible spectroscopy, powder X-ray diffraction, and field emission scanning electron microscopy have been used to characterize the nanomaterials. The PANI/Co3O4 nanocomposite sensors were found to be highly selective to CO gas at room temperature. A significantly high response of 0.81 has been obtained for 75 ppm CO concentration with a response time of 40 s. Based on the observations of the sensing study, a mechanism for CO sensing by the nanocomposite has been proposed. Influence of humidity on the sensor response towards CO has also been studied and the results presented. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44115.
机译：研究了聚苯胺/氧化钴（PANI / Co3O4）纳米复合材料在室温下对一氧化碳（CO）气体的敏感性。通过超声辅助共沉淀法制备了Co3O4纳米颗粒，然后将其掺入PANI基质中。傅里叶变换红外光谱和紫外可见光谱，粉末X射线衍射和场发射扫描电子显微镜已用于表征纳米材料。发现PANI / Co3O4纳米复合材料传感器在室温下对CO气体具有高度选择性。对于75 ppm CO浓度，响应时间为40 s，获得了非常高的0.81响应。基于对传感研究的观察，提出了纳米复合材料对CO进行传感的机理。还研究了湿度对传感器对CO响应的影响，并给出了结果。 （c）2016 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，44115。

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