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Electrodeposited nanostructured Pt–Ru co-catalyst on graphene for the electrocatalytic oxidation of formaldehyde

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Abstract

The electrochemical oxidation of formaldehyde over graphene surfaces modified with Pt–Ru co-catalyst is presented. Graphene was chemically converted from graphite and Pt–Ru co-catalyst was electrochemically deposited using cyclic voltammetry. The hybrid surface is prepared using “green approaches” and displayed electrocatalytic activity towards formaldehyde in the form of current oscillations. The current oscillations that were mainly due to adsorption/desorption of carbonaceous oxidative products are a factor of several parameters such as the concentrations of both formaldehyde and supporting electrolyte in solution, the amount of catalyst loading, scan rate of potential, upper potential limit, and the temperature change. CCG/Pt–Ru exhibited higher electrocatalytic activity toward formaldehyde electro-oxidation, and intense electrochemical current oscillations were obtained at relatively low HCHO concentrations compared to other work mentioned in literature for CCG/Pt–Pd.

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Acknowledgment

The authors would like to acknowledge the financial support from Cairo University through the President Office for Research Funds.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt

    Hagar K. Hassan, Nada F. Atta & Ahmed Galal

Authors
  1. Hagar K. Hassan
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  2. Nada F. Atta
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  3. Ahmed Galal
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Corresponding author

Correspondence to Ahmed Galal.

Additional information

This paper is a contribution to recognize Prof. Alexander Milchev on the occasion of his 70th birthday, for his influential contribution to the field of electrochemistry and for his dedication to his colleagues and students.

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Hassan, H.K., Atta, N.F. & Galal, A. Electrodeposited nanostructured Pt–Ru co-catalyst on graphene for the electrocatalytic oxidation of formaldehyde. J Solid State Electrochem 17, 1717–1727 (2013). https://doi.org/10.1007/s10008-013-2008-4

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  • DOI: https://doi.org/10.1007/s10008-013-2008-4

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