Abstract

La_xSr_1−xFeO₃ nanofibers were synthesized via electrospinning and characterized by field-emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). The diameters of the La_xSr_1−xFeO₃nanofibers produced were in the range of 30?C80 nm. When the La/Sr ratio was 0.7:0.3, La_0.7Sr_0.3FeO₃nanofibers showed high and rapid response and good repeatability to 500 ppm ethanol. At 185 °C, the response and recovery time of La_0.7Sr_0.3FeO₃ nanofiber were 11 s and 21 s, respectively. The La_0.7Sr_0.3FeO₃ nanofibers are promising sensitive materials for ethanol detecting.