FABRICATION AND RESEARCH OF CHARACTERISTICS OF NIO/PPY HYBRID FILMS USED FOR NH3 GAS SENSOR AT ROOM TEMPERATURE
Abstract
This work showed that, the NiO / PPy hybrid films were successfully synthesized by a simple direction from vapor phase polymerization at room temperature and normal pressure. The morphological and structural characteristics of these hybrid films have been examined and compared with the pure PPy and NiO films through SEM image, X-ray diffraction and Fourier-transform infrared spectroscope (FTIR). The measurement results of the initial NH3 gas sensitivity property indicated the response of the NiO/PPy hybrid film is remarkably higher than that of the PPy film without hybridization at room temperture. This research has shown the applied potential in gas sensor at room temperature based on the hybrid material groups between conductive polymers and transition metal oxides.
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