Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Efficient Electro-oxidation of 2-propanol at Platinum and Gold-modified Palladium Nanocatalysts

Version 1 : Received: 12 May 2023 / Approved: 15 May 2023 / Online: 15 May 2023 (15:32:44 CEST)

A peer-reviewed article of this Preprint also exists.

Ayman, K.; Asal, Y.M.; Mohammad, A.M.; Al-Akraa, I.M. Efficient Electro-Oxidation of 2-Propanol at Platinum- and Gold-Modified Palladium Nanocatalysts. Journal of Chemistry 2023, 2023, 1–9, doi:10.1155/2023/6674344. Ayman, K.; Asal, Y.M.; Mohammad, A.M.; Al-Akraa, I.M. Efficient Electro-Oxidation of 2-Propanol at Platinum- and Gold-Modified Palladium Nanocatalysts. Journal of Chemistry 2023, 2023, 1–9, doi:10.1155/2023/6674344.

Abstract

This study aims at investigating the catalytic performance of Pd, Pd/Pt, and Pd/Au nanocatalysts toward the 2-propanol electro-oxidation reaction (2POR) in an alkaline medium. The catalyst components (Pd, Pt, and Au) were sequentially electrodeposited onto a glassy carbon (GC) electrode surface and further characterized using electrochemical (cyclic voltammetry (CV)) and materials (Field-emission scanning electron microscopy (FE-SEM) coupled with energy dispersive X-ray (EDX)) characterization methods. The Pd/Au/GC catalyst showed the highest catalytic activity in terms of the highest oxidation current (0.386 mA) and the highest stability in terms of the highest obtained current after 1800 s of continuous electrolysis. This behaviour was attributed to the enhancement in the charge transfer kinetics where the Pd/Au/GC catalysts acquired the lowest charge transfer resistance (Rct, 1.85 kΩ) during the 2POR.

Keywords

Fuel cells; 2-Propanol electro-oxidation; Pd; Poisoning; Electrocatalyst

Subject

Chemistry and Materials Science, Physical Chemistry

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