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Synthesis and gas-sensing characteristics of WO3 nanofibers via electrospinning
Ji-yan Leng1, Xiu-juan Xu, Ning Lv
1First Clinical Hospital, Jilin University, Changchun, PR China.
Abstract:
WO(3) nanofibers were synthesized using an electrospinning method and characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The obtained WO(3) nanofibers were used as sensitive materials for the detection of NH(3). Indirect-heating sensors based on WO(3) nanofibers were prepared. When the WO(3) nanofiber-based sensors were exposed to 100 ppm NH(3) at 500°C, the response is 5.5, and the response and recovery times are 1 and 5s, respectively. These results indicate that the gas sensors based on WO(3) nanofibers express high and fast response and recovery characteristics to NH(3), and the WO(3) nanofibers are promising sensitive materials for NH(3) detecting.
