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• W2066676075 abstract "Here, a new functionalization method is introduced to control deposition of Pt nanoparticles on reduced graphene oxide (rGO). In this paper, we investigate the heterogeneous deposition of nanometer-sized Pt islands on rGO subjected to oxidation prior to deposition in the same conditions. We demonstrate that functional groups act as nucleation sites for Pt nanoparticle, and that homogeneous nucleation of small particles can be achieved by combining surface functionalization with diazonium chemistry and appropriate stabilizers in solution. For the purposes of this study, an effective electrochemical mediator is prepared using 4-aminothiophenol-modified rGO as a support decorated with Pt nanoparticles (Pt@SC6H4–rGO) for the oxidation of methanol and reduction of oxygen. The surface morphology and composition of Pt@SC6H4–rGO and Pt@rGO as well as their activity toward methanol oxidation and oxygen reduction are investigated by atomic force microscopy, field emission scanning electron microscopy, X–ray diffraction, cyclic voltammetry, and electrochemical impedance spectroscopy. The results show that decoration of Pt nanoparticle on functionalized rGO leads to three-dimensional Pt nanostructures. Comparisons of the synthesized [email protected] and [email protected]6H4–rGO in terms of their electrochemical performance also show that, compared to Pt@rGO, Pt@SC6H4–rGO has a better electrocatalytic activity for methanol oxidation and oxygen reduction in a solution containing 0.5 mol L−1 H2SO4 and/or 1.0 mol L−1 methanol." @default.
• W2066676075 created "2016-06-24" @default.
• W2066676075 creator A5028477000 @default.
• W2066676075 creator A5049835265 @default.
• W2066676075 creator A5056040998 @default.
• W2066676075 date "2014-06-01" @default.
• W2066676075 modified "2023-10-16" @default.
• W2066676075 title "A new strategy for the synthesis of 3-D Pt nanoparticles on reduced graphene oxide through surface functionalization, Application for methanol oxidation and oxygen reduction" @default.
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• W2066676075 doi "https://doi.org/10.1016/j.electacta.2014.03.057" @default.
• W2066676075 hasPublicationYear "2014" @default.
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