Abstract
Electrochemical oxidation of glucose on a glassy carbon disc electrode modified with multi-walled carbon nanotubes and nickel(II) oxide (GC/MWCNT/NiO) was examined by cyclic voltammetry and chronoamperometry in alkaline aqueous solutions. The results were compared with those obtained on a nickel(II) oxide modified glassy carbon electrode (GC/NiO). Both electrodes conditioned by potential cycling in a limited potential range (0.1-0.6 V vs. Ag/AgCl) in 0.10 M NaOH solution. It was found that the multi-walled carbon nanotubes improve remarkably the reactivity of nickel(II) oxide for glucose oxidation. The GC/MWCNT/NiO electrode exhibited good linear behavior in the concentration range from 2.0x10(-4) mol/L to 1.2x10(-2) mol/L for the quantitative analysis of glucose with a limit of detection of 1.6x10(-4) mol/L (3sigma). The prepared electrode exhibits satisfactory stability and long life if stored at ambient conditions. Finally, it has been demonstrated that the proposed modified electrode can be successfully used for the assay of glucose in serum samples.
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.
