Abstract
The catalytic activity of a glassy carbon electrode was significantly improved by in situ oxidation of cobalt oxide by Ni2O3, with respect to glucose oxidation. The electrochemical oxidation of glucose on a glassy carbon electrode modified (GCE) by cobalt oxide (CoO x /GCE) or nickel oxide (NiO x /GCE) was examined by cyclic voltammetry, in aqueous alkaline solutions. These results were compared with those obtained on a cobalt oxide deposited on GCE previously covered by a film of nickel (CoO x /NiO x /GCE). It was found that the modified electrode by two oxides has a superior catalytic activity in the oxidation of glucose. This electrode has good linear behaviour in the concentration range of 10.0 µmol/L to 3.0 mmol/L for the quantitative analysis of glucose with a sensitivity of 79.7 mA mol–1 L. The electrode has a satisfactory stability and a long life under ambient conditions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
