Skip to main content Accessibility help
×
Home

Electrochemical Impedance Spectrocopy Study Of Glucose Adsorption On Gold Nanoparticles-Graphite Paste Electrode

  • Azucena Osornio (a1), Luis A. García (a2), Leonor M. Blanco (a3), Rene Antaño (a1) and Federico Castañeda (a1)...

Abstract

Electrochemical Impedance Spectroscopy (EIS), is a confirmed tool for investigation of electrode/electrolyte interfaces and surface-modified electrodes. In the present work, we apply this approaching way to obtain a deeper insight into the electrochemical oxidation mechanism of the glucose in alkaline media. We studied the EIS response of gold nanoparticles embedded in carbon paste and use it as an electrode for the electro-oxidation of glucose. The results were compared with those of a polycrystalline gold electrode. In order to determine the polarization potentials for EIS tests, cyclic voltammetry is first conducted in 0.3 M KOH with 10 mM glucose, recorded at a scan rate of 1 mVs-1. Three polarization potentials were chosen, corresponding to: the open circuit potential (OCP), glucose oxidation and gold oxide formation respectively.

Copyright

Corresponding author

References

Hide All
1. Tominaga, M, Shimazoe, T, Nagashima, M, Taniguchi, I. Electrocatalytic oxidation of glucose at gold nanoparticle-modified carbon electrodes in alkaline and neutral solutions. Electrochemistry Communications. 2005 2//;7(2):189–93.
2. Wang, X, Liu, E, Zhang, X. Non-enzymatic glucose biosensor based on copper oxide-reduced graphene oxide nanocomposites synthesized from water-isopropanol solution. Electrochimica Acta. 2014 6/1/;130(0):253–60.
3. Pasta, M, La Mantia, F, Cui, Y. Mechanism of glucose electrochemical oxidation on gold surface. Electrochimica Acta. 2010 8/1/;55(20):5561–8.
4. Lang, NJ, Liu, B, Liu, J. Characterization of glucose oxidation by gold nanoparticles using nanoceria. Journal of Colloid and Interface Science. 2014 8/15/;428(0):7883.
5. Aoun, SB, Bang, GS, Koga, T, Nonaka, Y, Sotomura, T, Taniguchi, I. Electrocatalytic oxidation of sugars on silver-UPD single crystal gold electrodes in alkaline solutions. Electrochemistry Communications. 2003 4//;5(4):317–20.
6. Pasta, P, M., Ruffo, R, Falletta, E, Mari, CM, Pina, CD. Alkaline glucose oxidation on nanostructured gold electrodes. Gold Bulletin. 2010;43(1):5764.
7. Okatsu, H, Kinoshita, N, Akita, T, Ishida, T, Haruta, M. Deposition of gold nanoparticles on carbons for aerobic glucose oxidation. Applied Catalysis A: General. 2009 11/15/;369(1–2):814.

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed