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首页> 外文期刊>CERAMICS INTERNATIONAL >Flexible room-temperature gas sensor based on poly (para-phenylene terephthalamide) fibers substrate coupled with composite NiO@CuO sensing materials for ammonia detection
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Flexible room-temperature gas sensor based on poly (para-phenylene terephthalamide) fibers substrate coupled with composite NiO@CuO sensing materials for ammonia detection

机译:柔性室温气体传感器基于聚(对苯二甲酸苯甲酰苯甲酰苯甲酰苯甲酰苯甲酰苯甲酰苯甲酰苯甲酰甲酰胺)纤维衬底与复合NIO @ CUO传感材料进行氨检测

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摘要

Flexible chemiresistor-type sensor based on chemically sensitive oxide semiconductors is of great potential for wearable sensing field. It is still challenging in designing sensing materials with high electron mobility for the enhancement of sensitivity and developing flexible chemical sensors with high durability for commercial applications. Herein, we introduce that poly (para-phenylene terephthalamide) fibers, which are currently employed as substrate to support the composite NiO@CuO metal oxide semiconductors. The poly (para-phenylene terephthalamide)-NiO@CuO gas sensor exhibits excellent thermostability, with rarely changing in mass observed up to 450 degrees C of high temperature testing. Furthermore, a relatively low limit of detection of 46.5 ppb for NH3 is achieved at room temperature. The gas sensing mechanism of the sensing materials is interpreted via the electron-mobility-dominating gas sensing mode, in which the hole density is directly influenced via the electrons transferring between gas molecules and sensing materials. These results of the chemical gas sensor provide great promising for developing sensing materials with highly sensitivity and unlock the potential for newly-designed flexible chemiresistor-type sensor in the field of wearable sensing applications.
机译:基于化学敏感氧化物半导体的柔性化学体系传感器对于可穿戴感测场具有很大的潜力。设计具有高电子迁移率的传感材料仍然具有挑战性,以提高灵敏度和开发具有高耐久性商业应用的柔性化学传感器。在此,我们介绍该聚(对苯二甲酰氨酰胺)纤维,其目前用作基材以支持复合NIO @ CUO金属氧化物半导体。聚(对苯二甲苯二甲酰胺)-NiO @ CuO气体传感器具有优异的热稳定性,在肿块中很少观察到高达450℃的高温测试。此外,在室温下实现了46.5ppb的相对低的检测限。传感材料的气体传感机构通过电子迁移率 - 主导气体传感模式解释,其中孔密度通过在气体分子和传感材料之间传递的电子直接影响。这些化学气体传感器的结果提供了高度灵敏度和解锁可穿戴传感应用领域的高灵敏度的感应材料和解锁新设计的柔性化学静脉型传感器的巨大承诺。

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