文章信息

【作者】：Xueying Kou, Fanqi Meng, Ke Chen, Tianshuang Wang, Peng Sun*, Fangmeng Liu, Xu Yan, Yanfeng Sun, Fengmin Liu, Kengo Shimanoe, Geyu Lu*.
【题目】：High-performance acetone gas sensor based on Ru-doped SnO2 nanofibers
【关键词】：Ru-doped SnO2 nanofibers, Electrospinning, Acetone, Gas sensor
【版面信息】：Sensors & Actuators: B. Chemical 320 (2020) 128292

We report the Ru doping effect on the gas-sensing properties of SnO₂ nanofibers for acetone detection in this paper. For this purpose, pure and 1, 2, 3 mol% Ru-doped SnO₂ nanofibers were prepared through electrospinning technique combined with calcination treatment. The fibrous microstructure of these nanofibers were maintained and the grain size of the SnO2 nanoparticals were decreased from 9.2 nm (pure) to 5.1 nm (3% Ru-doped) after Ru doping. In order to confirm that Ru doping is an effective way to improve the gas sensing properties of the SnO₂-based gas sensor, the gas sensing properties of the sensors based on pure and Ru doped SnO₂ nanofibers were investigated systematically. The results showed that the response to 100 ppm acetone of 2 mol% Ru-doped SnO₂ nanofibers was 118.8, which was 12 times higher than that of pure SnO₂ nanofibers. In the end, the role of Ru in the gas sensing mechanism of SnO₂ nanofibers was analyzed according to the results of the X-ray photoelectron spectroscopy (XPS) and Ultraviolet photoelectron spectroscopy (UPS).