Enhanced Glucose Electrooxidation at Ni-Cu Binary Oxide Nanocatalyst

Authors

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

Document Type

Article

Publication Date

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

Al-Akraa, Islam M.; Abouzaid, Mahmoud M. Eng; Asal, Yaser M. Mr; and Mohammad, Ahmad M. Prof, "Enhanced Glucose Electrooxidation at Ni-Cu Binary Oxide Nanocatalyst" (2020). Chemical Engineering. 30.
https://buescholar.bue.edu.eg/chem_eng/30