材料科学
X射线光电子能谱
纳米纤维
煅烧
膜
静电纺丝
氧化物
选择性
化学工程
一氧化碳
气体探测器
纳米线
纳米技术
锌
复合材料
分析化学(期刊)
碳纳米纤维
碳纳米管
聚合物
探测器
化学
色谱法
光学
催化作用
生物化学
冶金
工程类
物理
作者
Tang-Yu Lai,Te-Hua Fang,Yu‐Jen Hsiao,En-Yu Kuo
出处
期刊:Current Nanoscience
[Bentham Science]
日期:2020-03-26
卷期号:16 (2): 187-195
被引量:9
标识
DOI:10.2174/1573413715666190710165825
摘要
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.
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