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چکیده
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In this work, a facile, low-cost and environmental friendly method without the use of any linking chemicals, i.e. galvanic replacement (transmetalation) is used for preparation of bimetallic Pt-Cu nanoparticles (NPs) onto highly porous poly (2-Methoxyaniline)/sodium dodecyl sulfate (P2MA-SDS) film. Electrochemical response of the prepared P2MA at the presence of SDS in 0.5 M H2SO4 solution is, at least, 18 times higher than that obtained in the absence of SDS at the carbon paste electrode surface. The prepared bimetallic Pt-Cu NPs are verified by scanning electron microscopy (SEM), energy dispersive spectroscopy and electrochemical methods. The SEM images reveal that SDS strongly influences morphology of the polymer film. The Pt-Cu NPs formed on the P2MA-SDS film are with average sizes about 65 nm. The obtained results from cyclic voltammetry and chronoamperometry reveal that the Pt-Cu NPs demonstrate enhanced electrocatalytic activity towards formic acid oxidation. Furthermore, the effects of several parameters such as P2MA thickness, 2MA, and SDS concentrations towards formic acid oxidation as well as long-term stability of the electrocatalyst have been investigated.
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