Structural and optical properties of polyaniline-green silver nanocomposite

Abstract

A facile synthesis of nanocomposite of polyaniline-silver nanoparticles (PANI-AgNP) has been studied here. The PANI-Ag nanocomposites were synthesized by in-situ polymerization of aniline using ammonium peroxydisulphate (APS) as oxidizing agent with varying concentration of Ag nanoparticles (0, 5 and 10 ml). AgNP were green synthesized separately using live cell filtrate of Aspergillus foetidus. The characterization of developed nanocomposite have been done by following XRD, FT-IR, FESEM, TGA and UV-Vis for their structure, surface morphology respectively. The analysis of XRD demonstrates that both PANI and nanocomposites is amorphous in nature and the possibility of interaction between PANI and AgNP is present as observed from FT-IR spectroscopy. The microstructural study of nanocomposites shows clustering of grains, changes in morphology with aggregation after incorporation of green AgNP in PANI. Various spectroscopic and microscopic techniques reveal that though structurally different the nanocomposites have same band gap as that of pure PANI with the composites having better thermal stability as compared to the PANI. The obtained results can be useful for further development of conducting polymer-green nanocomposite. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.