P1.7.8 Direct fabrication of La0.7Sr0.3FeO3 hollow nanofibers by electrospinning and their gas sensing properties

Jing Wang, Lin Zhao, Peng-Jun Yao & Hai-Ying Du
La0.7Sr0.3FeO3 hollow nanofibers are prepared by a facile single capillary electrospinning and calcination process. The hollow nanofibers are characterized by Scanning electron microscopy, Transmission electron microscopy and X-ray diffraction. The results indicate that the outer diameters of the hollow nanofibres range in 80-200 nm, and shell thickness are about 20 nm. Formaldehyde gas sensing properties are carried out in the concentration range of 0.1-100 ppm at the optimum operating temperature 240oC. The response and recovery...