A highly sensitive ethanol sensor based on mesoporous ZnO-SnO2 nanofibers
作者：Xiaofeng Song, Zhaojie Wang, Yongben Liu, Ce Wang and Lijuan Li
關鍵字：GAS SENSORS; THIN-FILMS; METAL; OXIDES; NANOPARTICLES; NANOWIRES; PROPERTY; SURFACE; GROWTH
論文來源：期刊
具體來源：NANOTECHNOLOGY
發表時間：2009年
A facile and versatile method for the large-scale synthesis of sensitive mesoporous ZnO–SnO2 (m-Z–S) nanofibers through a combination of surfactant-directed assembly and an electrospinning approach is reported. The morphology and the structure were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), x-ray diffraction (XRD), and nitrogen adsorption–desorption isotherm analysis. The results showed that the diameters of fibers ranged from 100 to 150 nm with mixed structures of wurtzite (ZnO) and rutile (SnO2), and a mesoporous structure was observed in the m-Z–S nanofibers. The sensor performance of the prepared m-Z–S nanofibers was measured for ethanol. It is found that the mesoporous fiber film obtained exhibited excellent ethanol sensing properties, such as high sensitivity, quick response and recovery, good reproducibility, and linearity in the range 3–500 ppm.