Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 160, Issue 2, Pages H98-H104Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.054302jes
Keywords
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Funding
- NASA Center for Advanced Nanoscale Materials (CANM) [NNX08BA48A, NNX10AQ17A]
- Welch Foundation Agency [AX-1615]
- National Science Foundation (NSF) PREM grant [DMR-0934218]
- CONACYT-Mexico [106437]
- National Center for Research Resources [2G12RR013646-11]
- PR-LSAMP, Puerto Rico Space grant
- AGEP Fellowship Program
- NASA GSRP Fellowship [NNX09AM23H]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [934218, 1103730] Funding Source: National Science Foundation
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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. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.054302jes] All rights reserved.
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