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Deposition and Characterization of Platinum and Palladium Nanoparticles on Highly Oriented Pyrolytic Graphite

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Academic year: 2020

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Fig. 1. A microscopy images by HRTEM, show metallic Nps synthesized by polyol method  at: a) platinum(2 nm length bar),  b) palladium(2 nm length bar), c) platinum well dispersed  synthesized at 145 °C(5 nm length bar), and d) HAADF shows of Pt nanoparticl
Fig. 2. HRTEM images of: a) of  Pt Nps on HOPG synthesized by polyol  heated in  H 2   flow  at 450ºC(5 nm length bar), b) Pt nanoparticle synthesized on HOPG by the electrochemical  method(20 nm length bar), c) Pd Np synthesized by polyol  on HOPG(20 nm l
Fig. 3. Inifinite hexagonal arrays of carbon atoms used in order to generate the honeycomb  structure for graphene
Fig. 4. Energy bands for graphene 2-L. The inset depicts the Wigner-Seitz cell for a  hexagonal configuration
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