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首页> 外文期刊>Scientific reports. >Highly sensitive H2S sensors based on Cu2O/Co3O4 nano/microstructure heteroarrays at and below room temperature
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Highly sensitive H2S sensors based on Cu2O/Co3O4 nano/microstructure heteroarrays at and below room temperature

机译：基于Cu2O / CO3O4纳米/微结构异质阵列的高度敏感的H2S传感器在室温下和低于室温

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Gas sensors with high sensitivity at and below room temperature, especially below freezing temperature, have been expected for practical application. The lower working temperature of gas sensor is better for the manufacturability, security and environmental protection. Herein, we propose a H2S gas sensor with high sensitivity at and below room temperature, even as low as ?30?°C, based on Cu2O/Co3O4 nano/microstructure heteroarrays prepared by 2D electrodeposition technique. This heteroarray was designed to be a multi-barrier system, and which was confirmed by transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy and scanning probe microscopy. The sensor demonstrates excellent sensitivity, sub-ppm lever detection, fast response, and high activity at low temperature. The enhanced sensing property of sensor was also discussed with the Cu2O/Co3O4 p-p heterojunction barrier modulation and Cu2S conductance channel. We realize the detection of the noxious H2S gas at ultra-low temperature in a more security and environmental protection way.
机译：实际应用预期了高度灵敏度，特别是室温，特别是低于冷冻温度的气体传感器。气体传感器的较低工作温度更好，适用于可制造性，安全和环保。在此，我们提出了H2S气体传感器，其在室温下具有高灵敏度，甚至低至30℃，基于由2D电沉积技术制备的Cu 2 O / CO3O4纳米/微结构异质载体。该异质阵列被设计为一种多阻隔系统，并且通过透射电子显微镜，扫描电子显微镜，X射线光电子能谱和扫描探针显微镜确认。传感器显示出优异的灵敏度，次PPM杠杆检测，快速响应和低温下的高活度。 Cu2O / Co3O4 P-P-P杂障屏障调制和CU2S电导通道还讨论了传感器的增强感测性。我们以更安全和环保的方式实现了超低温度的有毒H2S气体的检测。

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