P1.7.8 Direct fabrication of La0.7Sr0.3FeO3 hollow nanofibers by electrospinning and their gas sensing properties
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P1.7 Nanostructured Metal Oxide-based Sensors
- Author(s)
- J. Wang, L. Zhao - School of Electronic Science and Technology, Dalian University of Technology (P.R. China), P. Yao - School of Educational Technology, Shenyang Normal University (P.R. China), H. Du - Department of Electromechanical Engineering & Information, Dalian Nationalities University (China)
- Pages
- 1077 - 1080
- DOI
- 10.5162/IMCS2012/P1.7.8
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
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 times, and the crossresponse to ethanol, toluene, benzene, acetone, methanol, ammonia are measured.