Nonenzymatic hydrogen peroxide electrochemical sensor based on carbon-coated SnO2 supported Pt nanoparticles

Colloids Surf B Biointerfaces. 2013 Jan 1:101:106-10. doi: 10.1016/j.colsurfb.2012.05.033. Epub 2012 Jun 9.

Abstract

We describe a simple method for preparing the hybrid material of Pt nanoparticles (NPs) supported on carbon-coated SnO(2) nanospheres (Pt-SnO(2)@C). The as-prepared Pt-SnO(2)@C nanocomposite was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The presence of carbon-coated SnO(2) nanospheres (SnO(2)@C) remarkably improves the electrocatalytic activity of Pt NPs towards hydrogen peroxide (H(2)O(2)) oxidation. The Pt-SnO(2)@C nanocomposite modified glassy carbon (GC) electrode exhibited enhanced amperometric response to H(2)O(2), with detection limit of 0.1 μM and sensitivity of 241.1 μA mM(-1) cm(-2).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon
  • Catalysis
  • Electrochemistry / instrumentation*
  • Electrochemistry / methods*
  • Hydrogen Peroxide / chemistry*
  • Indicators and Reagents
  • Microscopy, Electron, Scanning
  • Nanoparticles
  • Oxidants / chemistry*
  • Platinum / chemistry*
  • Tin Compounds / chemistry*
  • X-Ray Diffraction

Substances

  • Indicators and Reagents
  • Oxidants
  • Tin Compounds
  • Platinum
  • Carbon
  • Hydrogen Peroxide
  • stannic oxide