Abstract
The polyaniline (PANi)-SnO2 nanohybrid based thin films doped with 10–50wt % camphor sulfonic acid (CSA) were deposited on the glass substrates using spin coating technique. The crystallinity, chemical structure and morphology of the films were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Field emission scanning electron microscopy respectively, which proved that there is a strong synergetic interaction between the CSA and PANi-SnO2 nanohybrid. The sensor response was estimated by the change in the electrical resistance of the film in the absence and presence of ammonia (NH3) gas. The sensor response and selectivity in relation to the CSA doping concentration and the gas concentration has been systematically studied. A significant sensitivity (91%) and fast response (46s) toward 100ppm NH3 operating at room temperature is observed for the 30wt % CSA doped PANi-SnO2 nanohybrid film. The sensing mechanism of CSA doped PANi-SnO2 nanohybrid film to NH3 was presumed to be the synergism of PANi and SnO2 or the effect of p–n heterojunctions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callSimilar Papers
More From: Synthetic Metals
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
