DOI码：10.1016/j.snb.2014.04.072

发表刊物：sensors and actuators B

关键字：Zinc oxide; Nanosheets; Hydrothermal; Gas sensor,Sensitivity

摘要：ZnO nanosheet microstructures have been directly grown on Al2O3 tube electrode by one-step hydrothermal method with different reaction times (3 h, 8 h and 12 h). The crystalline phase, morphology, and structure of the nanosheets are characterized by FESEM, TEM/SAED, and XRD. The results of FESEM reveal that ZnO nanosheets exhibit a sheet networks structure and a lager surface area. TEM/SAED images show a rough surface and a polycrystalline structure of ZnO nanosheets. X-ray diffraction indicated the ZnO architectures are well crystallized in a hexagonal wurtzite structure. Gas sensing properties of the ZnO nanosheets show high response, fast response-recovery cuves and long-term stability to 25–1000 ppm ethanol at appropriate temperature (400 ℃), especially for sensor B (8 h). Moreover, the response of sensorB can get up to 38.4 for 100 ppm ethanol, and even 25 ppm ethanol could be well detected with a high response about 15 which is mainly attributed to the high surface area. This demonstrated the great potential application of ZnO nanosheets for developing gas sensors.

论文类型：期刊论文

学科门类：工学

文献类型：J

卷号：201

是否译文：否

发表时间：2014-04-21

收录刊物：SCI

发布期刊链接：https://doi.org/10.1016/j.snb.2014.04.072