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Platinum decorated polythiophene modified stainless steel for electrocatalytic oxidation of benzyl alcohol

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Abstract

Platinum nanoparticles were electrochemically deposited on conducting polymer polythiophene (PTh)-coated stainless steel (SS) substrate. A thin layer of PTh on the steel substrate facilitates uniform deposition of Pt nanoparticles on the substrate, thereby improving the surface area to a great extent. The electrochemical properties of the modified electrodes were analyzed by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The physicochemical properties of the modified electrodes were investigated by Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X-ray diffraction spectroscopy (XRD), Raman spectroscopy, and Fourier transform infrared spectroscopy (FTIR). The proposed method has been applied for the electrocatalytic oxidation of benzyl alcohol in the presence of a mediator, 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO). Cyclic voltammetric studies reveal that the electrocatalytic activity of Pt–PTh/SS electrode is higher than that of PTh/SS electrode toward the conversion of benzyl alcohol to benzaldehyde.

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Acknowledgements

The authors are grateful to AFMM, IISc and MNCF, CeNSe, and IISc, Bengaluru for providing facilities for SEM, XRD, Raman spectroscopic and FT-IR analyses, respectively. The authors would like to thank STIC-SAIF, Cochin University, Kochi for TEM analysis.

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Authors and Affiliations

  1. Christ Academy Institute for Advanced Studies, Christ Nagar, Begur–Koppa Road, Bengaluru, 560083, India

    E. K. Joice & Sherin Rison

  2. Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, India

    Sherin Rison, K. B. Akshaya & Anitha Varghese

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  1. E. K. Joice
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Correspondence to Anitha Varghese.

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Joice, E.K., Rison, S., Akshaya, K.B. et al. Platinum decorated polythiophene modified stainless steel for electrocatalytic oxidation of benzyl alcohol. J Appl Electrochem 49, 937–947 (2019). https://doi.org/10.1007/s10800-019-01336-9

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