Enhanced Glucose Electrooxidation at Ni-Cu Binary Oxide Nanocatalyst

Authors

Yaser M. Asal Mr., The British University in EgyptFollow
Islam M. Al-Akraa Dr, The British University in Egypt
Ahmad M. Mohammad Prof, Cairo University
Mahmoud M. Abuzaied Eng, The British University in EgyptFollow

Document Type

Article

Publication Date

Winter 2-10-2020

Abstract

The aim of this study is to fabricate a nickel (NiOx) and copper (CuOx) oxide nanocatalyst on a glassy carbon (GC) electrode (will be abbreviated as Ni-Cu/GC) for glucose oxidation (GO). A sequential electrodepositon mode was applied to assemble NiOx and CuOx in the fabrication scheme. The optimization of Ni loading on the GC surface (will be abbreviated as Ni/GC electrode) was achieved first to attain the maximum catalytic efficiency in terms of the specific current toward GO. This (409 Ag^-1)was obtained by applying 15 mC/cm² in the deposition of Ni. However, unfortunately the NiOx/GC could not support a long-term stability toward GO that motivated a further modification with CuOx beneath NiOx (will be abbreviated as Ni-Cu/GC electrode). This modification enhanced the stability toward the GO where the decay in the specific current was not too much compared with that of the Ni/GC electrode. After 1 h of continuous electrolysis, the specific current reached 317 Ag^-1 at the Ni-Cu/GC electrode compared to 167 Ag^-1 at the Ni/GC electrode.

Recommended Citation

Asal, Yaser M. Mr.; Al-Akraa, Islam M. Dr; Mohammad, Ahmad M. Prof; and Abuzaied, Mahmoud M. Eng, "Enhanced Glucose Electrooxidation at Ni-Cu Binary Oxide Nanocatalyst" (2020). Chemical Engineering. 97.
https://buescholar.bue.edu.eg/chem_eng/97