In the master's thesis, I synthesized transition metal single atom electrocatalysts
(SAC) based on nickel, cobalt, manganese and iron on reduced graphene oxide (rGO)
using modified procedures, which should show selectivity for the electrosynthesis of
hydrogen peroxide. All synthesized SAC materials on rGO were properly
characterized by the following methods: scanning electron microscope (SEM), energy
dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), raman
spectroscopy and BET specific surface area analysis.
To investigate their electrochemical performance additional characterization
methods such as cyclic voltammetry (CV), chronoamperometry (CA) with rotating
disk electrode (RDE) and rotating ring-disk electrode (RRDE) were used. The
morphology, chemical structure and electrochemical properties were compared. The
results showed that the most suitable electrocatalyst for the electrosynthesis of
hydrogen peroxide is Ni on rGO in an alkaline electrolyte. The research results are
useful for further research, development and optimization of electrocatalysts for the
selective and efficient electrosynthesis of hydrogen peroxide.
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