Electrocatalysis by Nanoparticle: Enhanced Electro-Oxidation of Formic Acid at NiOx–Pd Binary Nanocatalysts

Authors

Islam M. Al-Akraa Dr., The British University in EgyptFollow
Ahmad M. Mohammad Prof, Cairo UniversityFollow
Mohamed S. El-Deab Prof, Cairo UniversityFollow
Bahgat E. El-Anadouli Prof, Cairo UniversityFollow

Document Type

Article

Publication Date

2015

Abstract

This study addresses formic acid (FA) electro-oxidation (FAO) at a binary catalyst composed of palladium (PdNPs) and nickel oxide (nano-NiOx) nanoparticles electrodeposited onto a glassy carbon (GC) electrode. The deposition sequence of PdNPs and nano-NiOx onto the GC electrode is properly adjusted in such a way that maximizes the electrode efficiency toward FAO. The highest catalytic activity and stability are obtained at the NiOx/Pd/GC electrode (with PdNPs directly deposited onto the GC electrode followed with nano-NiOx with an optimum surface coverage, of ca. 41%). The enhancement is manifested in the increase of the oxidation peak current of FA together with a favorable negative shift of the onset potential of FAO. It is believed that nano-NiOx could facilitate the direct oxidation of FA via minimizing the amount of the poisoning species at the Pd surface.

Recommended Citation

Al-Akraa, Islam M. Dr.; Mohammad, Ahmad M. Prof; El-Deab, Mohamed S. Prof; and El-Anadouli, Bahgat E. Prof, "Electrocatalysis by Nanoparticle: Enhanced Electro-Oxidation of Formic Acid at NiOx–Pd Binary Nanocatalysts" (2015). Chemical Engineering. 43.
https://buescholar.bue.edu.eg/chem_eng/43