Enhanced electrocatalytic stability of platinum nanoparticles supported on a nitrogen-doped composite of carbon nanotubes and mesoporous titania under oxygen reduction conditions

ChemSusChem. 2012 Mar 12;5(3):523-5. doi: 10.1002/cssc.201100643. Epub 2012 Feb 29.

Abstract

Cheers for titania: An N-doped composite of carbon nanotubes (CNTs) and mesoporous TiO(2) is used as support for Pt nanoparticles applied in the oxygen reduction reaction. The composite Pt/N-TiO(2) -CNT shows a higher stability than Pt particles on carbon black or N-doped CNTs, as indicated by accelerated stress tests of up to 2000 cycles. The enhanced stability is attributed to strong interactions between TiO(2) and Pt and a higher corrosion resistance of TiO(2) as well as CNTs.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Electrochemical Techniques / methods
  • Metal Nanoparticles / chemistry*
  • Microscopy, Electron, Scanning
  • Microscopy, Electron, Transmission
  • Nanocomposites / chemistry*
  • Nanocomposites / ultrastructure
  • Oxidation-Reduction
  • Oxygen / chemistry*
  • Platinum / chemistry*
  • Titanium / chemistry*

Substances

  • titanium dioxide
  • Platinum
  • Titanium
  • Oxygen