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Synthesis and characterization of PANI nanostructures for supercapacitors and photoluminescence

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Abstract

Polyaniline structures were synthesized through a chemical method using citric acid and oxalic acid as carriers and 5 μm size α-alumina particles as a template. The obtained nano-size pristine products were characterized using X-ray diffraction, infrared spectroscopy, scanning electron microscopy, optical absorption spectroscopy, photoluminescence spectroscopy and cyclic voltammetry (CV). Nanofibrous PANI was obtained with oxalic acid, nanoparticles with oxalic acid and α-alumina, net-like nanostructures with citric acid and spherical nanoparticles with citric acid and α-alumina. The high intensity photoluminescence of PANI prepared with oxalic acid as a carrier is possibly due to greater chances of exciton formation resulting from increased π-electron mobility. Electrochemical studies of PANI electrodes in 2.0 M H2SO4 were carried out at various scan rates. The CVs showed rectangular shape with added pronounced oxidation and reduction peaks.

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Notes

  1. These devices are sometimes also called electrochemical double layer capacitors ECDL.

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Acknowledgments

One of the authors (V.S.R.C.) thanks the Alexander von Humboldt-Foundation for a fellowship. The authors gratefully acknowledge valuable contributions by M. Schlesinger and M. Mehring in the structural analysis using XRD and support by Dr Steffen Schulze during SEM characterization.

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Authors and Affiliations

  1. Institut für Chemie, AG Elektrochemie, Technische Universität Chemnitz, 09107, Chemnitz, Germany

    Venkata Subba Reddy Channu & Rudolf Holze

  2. Solid State Ionics and Surface Sciences Lab, Department of Physics, Southern University and A&M College, Baton Rouge, 70813, USA

    Bobba Rambabu

  3. KITE College of Professional Engineering Sciences, Jawaharlal Nehru Technological University, Shabad, 509217, India

    Rajamohan R. Kalluru

Authors
  1. Venkata Subba Reddy Channu
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  2. Rudolf Holze
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  3. Bobba Rambabu
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  4. Rajamohan R. Kalluru
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Correspondence to Rudolf Holze.

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Channu, V.S.R., Holze, R., Rambabu, B. et al. Synthesis and characterization of PANI nanostructures for supercapacitors and photoluminescence. Iran Polym J 21, 457–462 (2012). https://doi.org/10.1007/s13726-012-0049-7

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  • DOI: https://doi.org/10.1007/s13726-012-0049-7

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