Stepwise synthesis, characterization, and electrochemical properties of ordered mesoporous carbons containing well-dispersed Pt nanoparticles using a functionalized template route

Shou Heng Liu, Shih Che Chen

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A stepwise method is described for the accurately controlled growth of Pt nanoparticles supported on ordered mesoporous carbons (PtOMC) by the nanocasting of carbon and metal precursors in the pore channels of mesoporous silicas functionalized with SiH groups. Results obtained from N2 adsorption/desorption isotherms and transmission electron microscopy showed well-dispersed Pt nanoparticles (23 nm) on PtOMC with high surface area (837 m2 g-1) and regular pore channels (2.9 nm), which facilitate reactant/product diffusion. X-ray diffraction and X-ray photoelectron spectroscopy indicated that Pt nanoparticles in the PtOMC sample were mostly present in the metallic form of a face-centered cubic (fcc) crystalline structure. The PtOMC catalyst was found to have superior electrocatalytic properties during oxygen reduction reaction as compared to typical commercial electrocatalysts.

Original languageEnglish
Pages (from-to)2420-2427
Number of pages8
JournalJournal of Solid State Chemistry
Volume184
Issue number9
DOIs
Publication statusPublished - 2011 Sep 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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