An Enhanced Oxidation of Formate on PtNi/Ni Foam Catalyst in an Alkaline Medium

In this study, a platinum-coated Ni foam catalyst (denoted PtNi/Ni foam) was investigated for the oxidation of the formate reaction (FOR) in an alkaline medium. The catalyst was fabricated via a two-step procedure, which involved an electroless deposition of the Ni layer using sodium hypophosphite a...

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Published inCrystals (Basel) Vol. 12; no. 3; p. 362
Main Authors Nacys, Antanas, Šimkūnaitė, Dijana, Balčiūnaitė, Aldona, Zabielaitė, Aušrinė, Upskuvienė, Daina, Šebeka, Benjaminas, Jasulaitienė, Vitalija, Kovalevskij, Vitalij, Norkus, Eugenijus, Tamašauskaitė-Tamašiūnaitė, Loreta
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.03.2022
Subjects
Catalysis
Catalysts
Electrodes
Electroless deposition
Electroless plating
Electrolytes
Energy
formate
Intermetallic compounds
Metal foams
Metals
Nanoparticles
Nanostructured materials
nickel foam
Oxidation
Platinum
Poisoning
Poisons
Reducing agents
Scanning electron microscopy
Work stations
United Kingdom > UK
Germany
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Summary:In this study, a platinum-coated Ni foam catalyst (denoted PtNi/Ni foam) was investigated for the oxidation of the formate reaction (FOR) in an alkaline medium. The catalyst was fabricated via a two-step procedure, which involved an electroless deposition of the Ni layer using sodium hypophosphite as a reducing agent and the subsequent electrodeposition of the platinum layer. The PtNi/Ni foam catalyst demonstrated enhanced electrocatalytic activity for the FOR in an alkaline medium compared to the Ni/Ni foam catalyst and pure Pt electrode. Moreover, the PtNi/Ni foam catalyst promoted the FOR at more negative potentials than the Pt electrode. This contributed to a significant negative shift in the onset potential, indicating the high activity of the catalyst. Notably, in alkaline media with the PtNi/Ni foam catalyst, the FOR proceeds via a direct pathway mechanism without significant accumulation of poisonous carbonaceous species on the PtNi/Ni foam catalyst.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst12030362