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Ru decorated Pt nanoparticles by a modified polyol process for enhanced catalytic activity for methanol oxidation
- Authors
- Kakati, N.; Lee, S. H.; Maiti, J.; Yoon, Y. S.
- Issue Date
- Nov-2012
- Publisher
- ELSEVIER
- Keywords
- Platinum; Ruthenium; Methanol oxidation; Polyol synthesis; Durability; Direct methanol fuel cell; Electrocatalyst
- Citation
- SURFACE SCIENCE, v.606, no.21-22, pp.1633 - 1637
- Journal Title
- SURFACE SCIENCE
- Volume
- 606
- Number
- 21-22
- Start Page
- 1633
- End Page
- 1637
- ISSN
- 0039-6028
- Abstract
- Ru decorated Pt nanoparticles on carbon nanotubes (MWCNTs) were prepared by a modified polyol synthesis method for enhanced catalytic activity for methanol oxidation. The characterizations for the electrocatalysts were carried out by transmission electron microscopy (TEM), X-ray diffraction (XRD), cyclic voltammetry (CV) and chronoamperometry (CA). The modified polyol synthesis method promoted position-controlled nucleation and growth of Ru atoms near Pt, and resulted in improved durability against catalyst poisoning compared to PtRu/MWCNTs prepared by common polyol method. This concept also allowed a high loading and dispersion of the catalyst on the carbon supports with few agglomerations of catalyst nanoparticles, resulting in high catalytic activity. (C) 2012 Elsevier B.V. All rights reserved.
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Related Researcher
- Yoon, Young Soo
- Engineering (Department of Materials Science & Engineering)