Composite Electrodes with Carbon Supported Ru Nanoparticles for H2O2 Detection

Authors

  • Liana Maria Muresan Department of Chemical Engineering, Faculty of Chemistry and Chemical Engineering, University «Babeş-Bolyai» Cluj-Napoca, ROMANIA
  • Graziella L. Turdean
  • Vllaznim Mula
  • Valdrin Januzaj

DOI:

https://doi.org/10.17344/acsi.2014.672

Keywords:

carbon supported Ru nanoparticles, H2O2 amperometric detection, carbon paste modified electrodes

Abstract

A new carbon paste electrode (CPE) incorporating Ru - nanoparticles (RuNP) stabilized on graphite powder was developed for H2O2 amperometric detection. Cyclic voltammetric measurements, performed in phosphate buffer solutions at different potential scan rates and different potential ranges were carried out in order to evaluate the electrochemical behavior of the CPE-RuNP modified electrodes. From amperometric measurements performed at -0.1 V vs. Ag/AgCl, KClsat, the electrocatalytic efficiency toward H2O2 reduction was evaluated and it was found in the range: 28.47 % (CPE) < 94.81 % (CPE-RuNP (2.5:1)) < 118.19 % (CPE-RuNP (2.5:3)) < 152.43 % (CPE-RuNP (2.5:2), recommending the new electrodes as promising sensors for hydrogen peroxide detection.

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Published

19.01.2015

Issue

Vol. 62 No. 1 (2015)

Section

Physical chemistry

License

Except where otherwise noted, articles in this journal are published under the Creative Commons Attribution 4.0 International License