Enhanced methanol oxidation on N-doped reduced graphene oxide/ZnO/nano-Pt catalyst

Karateki̇n, Rukan Suna; Kaplan, Sedef; Özmen, Sevda Ildan; Düdükcü, Meltem

doi:10.1016/j.diamond.2022.109145

Cited by 5 publications

(2 citation statements)

References 44 publications

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“…The Inset figure in Figure 5b shows a plot of peak current density versus the square root of the scan rate (ν 1/2 ). The linear response of the graph shows that the reaction occurred under diffusion-controlled conditions [15].…”

Section: Electrochemical Measurementmentioning

confidence: 97%

“…The other reason is linked to the adsorption methanol amount which got higher in the presence of S atoms on the graphene layer [14]. In general, recorded CVs for MeOH oxidation reaction include forward peak current and backward current peak belonging to the CO2 and carbonaceous species (COad) which were adsorbed on the catalyst surface, and the adsorbed carbonaceous species were oxidized, respectively [15]. When looking at the anodic region of CVs for both electrodes, only Ni@GCE CVs include backward peak current.…”

Section: Electrochemical Measurementmentioning

confidence: 99%

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Efficient Methanol Electro-oxidation on Ni, S Dual Doped Reduced Graphene Layer Catalyst

SUNA,

KAPLAN

2023

Cumhuriyet Science Journal

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Energy crisis is the most popular issue in the world, which must be overcome with the development of alternative energy sources. Among them, methanol is a promising fuel when used in direct methanol fuel cells. However, the mentioned cell needs highly electroactive and stable anode materials toward MeOH. Ni has gained attention as it is an alternative to noble atoms. In this study, Ni was deposited on reduced graphene layer which functionalized with S atoms via the hydrothermal method. The fabricated sample was characterized by using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX), mapping, X-ray Powder Diffraction (XRD), and Brunauer–Emmett–Teller method (BET). Two samples as called Ni/GCE and Ni@s-rGO/GCE were examined for methanol oxidation reaction in alkaline media. For methanol oxidation, due to the higher surface area, and small particle size of Ni, the mass activity of Ni@s-rGO/GCE is two times higher than Ni/GCE

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Section: Electrochemical Measurementmentioning

confidence: 97%

Section: Electrochemical Measurementmentioning

confidence: 99%