Platinum electrodeposition on unsupported singlewall carbon nanotubes and its application as methane sensing material

Enid Contes De Jesus, Diana Santiago, Gilberto Casillas, Alvaro Mayoral, Cesar Magen, Miguel Jośe-Yacaman, Jing Li, Carlos R. Cabrera

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

This paper reports the decoration of single wall carbon nanotubes (SWCNTs) with platinum (Pt) nanoparticles using an electrochemical technique, rotating disk slurry electrode (RoDSE). Pt/SWCNTs were electrochemically characterized by cyclic voltammetry technique (CV) and physically characterized through the use of transmission electron microscopy (TEM), energy dispersive spectroscopy - X-ray florescence (EDS-XRF) and X-ray diffraction (XRD). After characterization it was found that electrodeposited nanoparticles had an average particle size of 4.1 ± 0.8 nm. Pt/SWCNTs were used as sensing material for methane (CH4) detection and showed improved sensing properties in a range of concentration from 50 ppm to 200 ppm parts per million (ppm) at room temperature, when compared to other Pt/CNTs-based sensors. The use of this technique for the preparation of Pt/SWCNTs opens a new possibility in the bulk preparation of samples using an electrochemical method and thus their potential use in a wide variety of applications in chemical sensing, fuel cell and others.

Original languageEnglish (US)
Pages (from-to)H98-H104
JournalJournal of the Electrochemical Society
Volume160
Issue number2
DOIs
StatePublished - 2013
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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