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

研究成果: Article同行評審

11 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)2420-2427
頁數8
期刊Journal of Solid State Chemistry
184
發行號9
DOIs
出版狀態Published - 2011 9月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 陶瓷和複合材料
  • 凝聚態物理學
  • 物理與理論化學
  • 無機化學
  • 材料化學

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