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Synthesis of highly dispersed platinum nanoparticles on multiwalled carbon nanotubes and their electrocatalytic activity toward hydrogen peroxide

Authors
Journal
Journal of Alloys and Compounds
0925-8388
Publisher
Elsevier
Publication Date
Volume
505
Issue
2
Identifiers
DOI: 10.1016/j.jallcom.2010.06.085
Keywords
  • Carbon Nanotube
  • Platinum
  • Composite Materials
  • Electrochemical Reactions

Abstract

Abstract Multiwalled carbon nanotubes were successfully coated with Pt nanoparticles through NH 3 gas pretreatment. Pt with particle size distribution of 1–4 nm was highly dispersed on carbon nanotubes. Cyclic voltammetry of ferrocyanide system was used to characterize the real electroactive surface area of platinum nanoparticle–multiwalled carbon nanotube (PtNP–MWCNT) coated glassy carbon electrode, and cyclic voltammetry for the PtNP–MWCNT coated electrode toward detecting H 2O 2 was measured to characterize the electrocatalytic property of the composite. Our results showed that the electroactive surface area of PtNP–MWCNT was higher than those of pristine multiwalled carbon nanotubes and Pt nanoparticles, and the composite exhibited the best electrocatalytic property for H 2O 2.

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