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首页> 外文期刊>RSC Advances >Hydrothermally synthesized CuO based volatile organic compound gas sensor
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Hydrothermally synthesized CuO based volatile organic compound gas sensor

机译：水热合成CuO基挥发性有机化合物气体传感器

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摘要

In the present work, single-phase CuO particles were synthesized by a hydrothermal method and characterized by SEM, TEM and XRD. The gas sensing properties of the CuO based sensor to some representative flammable VOC gases such as ethanol, isopropanol, acetone, benzene, para-xylene and decane were investigated. The sensor resistance increased when exposed to these flammable analytes, as well as when the concentration of oxygen in air decreased. That phenomenon is attributed to the surface accumulation conduction mechanism of the p-type metal oxide semiconductor, when negatively charged surface oxygen desorbs from the surface of CuO and releases electrons back to the CuO bulk. According to our research, the detection limit of the CuO based sensor to decane was better than 1 ppm, which indicated the potential applications of CuO based sensors in detecting low concentration decane.
机译：在本工作中，通过水热法合成了单相CuO颗粒，并通过SEM，TEM和XRD对其进行了表征。研究了基于CuO的传感器对一些代表性的可燃VOC气体（例如乙醇，异丙醇，丙酮，苯，对二甲苯和癸烷）的气敏特性。当暴露于这些易燃分析物以及空气中的氧气浓度降低时，传感器电阻会增加。这种现象归因于p型金属氧化物半导体的表面累积传导机制，当带负电荷的表面氧从CuO的表面解吸并将电子释放回CuO块体时。根据我们的研究，基于CuO的传感器对癸烷的检出限优于1 ppm，这表明基于CuO的传感器在检测低浓度癸烷中的潜在应用。

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