Preparation, characterization and CO 2 gas sensitivity of Polyaniline doped with Sodium Superoxide (NaO 2 )
Source abstract
Abstract
Abstract The sodium superoxide was prepared in single step method by heating sodium nitrate (NaNO 3 ) in oxygen rich environment. The PANi/NaO 2 composites were prepared using Ex-situ technique range from 5–20 wt.%. The crystallinity and structure morphology of the PANi/ NaO 2 composite films were characterized by X-ray diffraction, Scanning electron microscopy and Fourier transform infrared spectroscopy respectively. The sensor response was estimated by the change in electrical resistance of sensor in presence of CO 2 gas. The sensor response and selectivity for pure PANi and doped PANi/NaO 2 sensors as a function of concentration of CO 2 at room temperature has been systematically studied. The sensors show better performance towards the CO 2 . A significant sensitivity and fast response toward CO 2 observed for the 20 wt.% PANi/NaO 2 composite film. The sensing response curve assign to transition from n -type to p -type behavior of samples.
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Research context
OpenAlex topics: Conducting polymers and applications · Analytical Chemistry and Sensors · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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