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Abstract
This paper reports the electrochemical activity of nanostructured conducting polyaniline (NSPANI) whose properties were enhanced by adding inorganic ceria (CeO2) nanoparticles that has excellent electro catalytic ability and biocompatibility properties. The method of synthesis employed for the nanocomposites of NSPANI and Cerium oxide (CeO2) was by in-situ polymerization method with different weight percentage of cerium oxide in aniline monomer. The metal oxide CeO2 nanoparticles were prepared by co-precipitation method. The effects of addition of ceria in weight percentage of 10, 20, 25 and 30 were investigated by various characterization techniques like X-ray diffraction, functional groups by Fourier Transform Infrared Spectroscopy, Thermal stability by Thermal Gravimetric Analysis, Morphology by Scanning Electron Microscope and Transmission electron microscope. Application of NSPANI/CeO2 nanocomposites in the field of humidity sensors were studied where different weight percentages of the CeO2 in aniline were compared along with the NSPANI without ceria. The material that showed the maximum sensitivity and also good linearity was the nanocomposite of NSPANI with 20% ceria.
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