Background: A sensing material of zinc oxide (ZnO) was investigated for its use in the electrospun nanofibers for gas sensing. The metal oxide semiconductor gas sensor response is caused by the oxygen that undergoes a chemical reaction on the surface of an oxide, resulting in a change in the measured resistance.

Objective: One-dimensional nanofibers gas sensor have high sensitivity and diverse selectivity.

Methods: One-dimensional nanofiber by an electrospinning method was collected and a sensing membrane was formed. In addition, the gas sensing mechanism was discussed and verified by X-ray photoelectron spectroscopy (XPS).

Results: The ZnO nanofiber membrane had an optimum crystalline phase with a lattice spacing of 0.245 nm and a non-woven fabric structure at a calcination temperature of 500°C, whereas the nanofiber diameter and membrane thickness were about 100 nm and 8 μm, respectively. At an operating temperature of 200°C, the sensing material exhibited good recovery and reproducibility in response to Carbon monoxide (CO), and the concentration was also highly discernible. In addition, the reduction in the peak of OIII at 531.5 to 532.5 eV according to the analysis of XPS was consistent with the description of the sensing mechanism.

Conclusion: The gas sensor of ZnO nanofiber membranes has high sensitivity and diverse selectivity, which can be widely applied in potential applications in various sensors and devices.

背景：研究了氧化锌（ZnO）的传感材料在用于气体传感的电纺纳米纤维中的用途。金属氧化物半导体气体传感器的响应是由在氧化物表面上发生化学反应的氧引起的，从而导致测量电阻的变化。

目的：一维纳米纤维气体传感器具有高灵敏度和多种选择性。

方法：采用静电纺丝法收集一维纳米纤维，形成传感膜。此外，还讨论了气体感应机制，并通过X射线光电子能谱（XPS）进行了验证。

结果：ZnO纳米纤维膜在500°C的煅烧温度下具有0.245 nm的最佳晶相和无纺布结构，而纳米纤维的直径和膜厚度分别约为100 nm和8μm。 。在200°C的工作温度下，感测材料响应一氧化碳（CO）表现出良好的回收率和重现性，而且浓度也很容易辨别。此外，根据XPS分析，OIII峰在531.5至532.5 eV处的减少与传感机制的描述一致。

结论：ZnO纳米纤维膜的气体传感器具有较高的灵敏度和不同的选择性，可广泛应用于各种传感器和设备的潜在应用中。