logo

  • P-ISSN1225-0163
  • E-ISSN2288-8985
  • SCOPUS, ESCI, KCI

Article Detail

Home > Article Detail
  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Electrocatalytic activity of the bimetallic Pt-Ru catalysts doped TiO2-hollow sphere nanocomposites

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2013, v.26 no.1, pp.42-50
https://doi.org/10.5806/AST.2013.26.1.042



Abstract

This paper describes the electrocatalytic activity for the oxidation of small biomolecules on the surface of Pt-Ru nanoparticles supported by TiO2-hollow sphere prepared for use in sensor applications or fuel cells. The TiO2-hollow sphere supports were first prepared by sol-gel reaction of titanium tetraisopropoxide with poly(styrene-co-vinylphenylboronic acid), PSB used as a template. Pt-Ru nanoparticles were then deposited by chemical reduction of the Pt4+ and Ru3+ ions onto TiO2-hollow sphere (Pt-Ru@TiO2-H). The prepared Pt-Ru@TiO2-H nanocomposites were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD),and elemental analysis. The electrocatalytic efficiency of Pt-Ru nanoparticles was evaluated via ethanol,methanol, dopamine, ascorbic acid, formalin, and glucose oxidation. The cyclic voltammograms (CV) obtained during the oxidation studies revealed that the Pt-Ru@TiO2-H nanocomposites showed high electrocatalytic activity for the oxidation of biomolecules. As a result, the prepared Pt-Ru catalysts doped onto TiO2-H sphere nanocomposites supports can be used for non-enzymatic biosensor or fuel cell anode electrode.

keywords
Electrocatalytic oxidation, Pt-Ru nanocomposites, <TEX>$TiO_2$</TEX>-Hollow nanocomposites, Poly(styrene-co-vinylphenylboronic acid)

상단으로 이동

Analytical Science and Technology