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Author Barde, R. V.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ ANILINE ♦ CARBON DIOXIDE ♦ CONCENTRATION RATIO ♦ DOPED MATERIALS ♦ ELECTRIC CONDUCTIVITY ♦ FOURIER TRANSFORMATION ♦ HEATING ♦ MORPHOLOGY ♦ N-TYPE CONDUCTORS ♦ ORGANIC POLYMERS ♦ OXYGEN ♦ P-TYPE CONDUCTORS ♦ SCANNING ELECTRON MICROSCOPY ♦ SENSITIVITY ♦ SENSORS ♦ SODIUM NITRATES ♦ TEMPERATURE RANGE 0273-0400 K ♦ THERMAL GRAVIMETRIC ANALYSIS ♦ THIN FILMS ♦ X-RAY DIFFRACTION
Abstract Highlights: • NaO{sub 2} prepared in single step method from NaNO{sub 3} in oxygen rich environment. • The sensors show better performance towards the CO{sub 2}. • A significant sensitivity and fast response toward of CO{sub 2} is observed. • Sensing response assign to transition from n-type to p-type behavior of samples. - Abstract: The sodium superoxide was prepared in single step method by heating sodium nitrate (NaNO{sub 3}) in oxygen rich environment. The PANi/NaO{sub 2} composites were prepared using Ex-situ technique range from 5–20 wt.%. The crystallinity and structure morphology of the PANi/ NaO{sub 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{sub 2} gas. The sensor response and selectivity for pure PANi and doped PANi/NaO{sub 2} sensors as a function of concentration of CO{sub 2} at room temperature has been systematically studied. The sensors show better performance towards the CO{sub 2}. A significant sensitivity and fast response toward CO{sub 2} observed for the 20 wt.% PANi/NaO{sub 2} composite film. The sensing response curve assign to transition from n-type to p-type behavior of samples.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-01-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 73


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