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Cu/CuO@ZnO Hollow Nanofiber Gas Sensor: Effect of Hollow Nanofiber Structure and P–N Junction on Operating Temperature and Sensitivity

机译:Cu / CuO @ ZnO空心纳米纤维气体传感器:空心纳米纤维结构和PN结对工作温度和灵敏度的影响

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摘要

For the fast and easy detection of carbon monoxide (CO) gas, it was necessary to develop a CO gas sensor to operate in low temperatures. Herein, a novel Cu/CuO-decorated ZnO hollow nanofiber was prepared with the electrospinning, calcination, and photodeposition methods. In the presence of 100 ppm CO gas, the Cu/CuO-photodeposited ZnO hollow nanofiber (Cu/CuO@ZnO HNF) showed twice higher sensitivity than that of pure ZnO nanofiber at a relatively low working temperature of 300 °C. The hollow structure and p–n junction between Cu/CuO and ZnO would be considered to contribute to the enhancement of sensitivity to CO gas at 300 °C due to the improved specific surface area and efficient electron transfer.
机译:为了快速轻松地检测一氧化碳(CO)气体,有必要开发一种可在低温下运行的CO气体传感器。在这里,用电纺,煅烧和光沉积方法制备了一种新颖的装饰了Cu / CuO的ZnO中空纳米纤维。在100 ppm CO气体的存在下,在相对较低的300°C工作温度下,Cu / CuO光沉积的ZnO中空纳米纤维(Cu / CuO @ ZnO HNF)的灵敏度是纯ZnO纳米纤维的两倍。 Cu / CuO和ZnO之间的中空结构和p–n结由于改善了比表面积和有效的电子传递,被认为有助于在300°C时增强对CO气体的敏感性。

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