Electrochemical analysis: Fabrication of bimetallic Pt/Sn nanocatalyst electrode with modified glassy carbon analysis and evaluation of methanol oxidation reaction

For the methanol oxidation reaction (MOR), the electrocatalytic activity of Platinum and Platinum/tin nanoparticles supported on Vulcan carbon and multi-walled carbon nanotubes (MWCNT) was examined. Pt/C, Pt-Sn/C, Pt/MWCNT, and Pt-Sn/MWCNT catalysts were created via the precipitation reduction process with sodium borohydride. Cyclic voltammetry, field emission scanning electron microscopy (FESEM), and X-ray diffraction (XRD) were employed to investigate the electrocatalysts. In comparison to other electrocatalysts, the Pt-Sn/MWCNT electrocatalyst with the Pt/Sn atomic ratio (۳:۱) demonstrated a lower peak potential during cyclic voltammetry and a greater forward peak current density (۰.۳ mA) in the methanol oxidation process (MOR) (۰.۵۵ V). The impact of applying a thin polyaniline layer to the glassy carbon (GC) electrode surface was next examined. In aqueous acidic environments, a thin coating of polyaniline and platinum-tin electrocatalytic particles supported by multiwall carbon nanotubes (GC/polyaniline/Pt-Sn/MWCNT) (۱.۲ mA) increased methanol oxidation. Platinum and platinum-tin nanoparticles on multi-walled carbon nanotubes and Vulkan carbon have been effectively produced by a deposition-reduction method with sodium borohydride.

کلیدواژه ها:

Electrocatalyst ، platinum ، electrochemical analysis ، Polymer ، tin ، Methanol oxidation