【作者】：Jiang, B.; Tao, W.; Zhao, L.; Wang, T.; Liu, X.; Liu, F.; Yan, X.; Sun, Y.; Lu, G.; Sun, P.
【题目】：Double-shell ZnO hollow microspheres prepared by template-free method for ethanol detection
【关键词】：Pure phase ZnO; Template-free method; Double-shell microsphere; Ethanol gas sensor; High sensing performance.
【版面信息】：Sensors and Actuators B: Chemical 2023, 385, 133626.
摘要:
Oxide semiconductors with multi-shell hollow architecture are considered favorable candidates as sensing materials for applications in high-performance gas sensors. Herein, the solid, core-shell, and double-shell zinc oxide (ZnO) microspheres were successfully prepared via a facile template-free method. Compared with solid and coreshell spheres, the gas sensor based on double-shell sphere exhibited the highest response to 100 ppm ethanol at 275 degrees C (- 47.4), which was about 4.8-fold higher than that of the solid sphere (- 9.8) under the same conditions. Furthermore, the detection limit of the double-shell ZnO microsphere could reach 1 ppm. The enhancement mechanism of the ethanol gas-sensing performance was systematically discussed.
原文链接：https://doi.org/10.1016/j.snb.2023.133626
