Journal
ACS CATALYSIS
Volume 4, Issue 6, Pages 1926-1930Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cs500107t
Keywords
Pt nanoparticles; ordered mesoporous carbon spheres; electrocatalyst; methanol oxidation reaction; oxygen reduction reaction; durability
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Funding
- National 973 Program of China [2009CB219903]
- National Natural Science Foundation of China [51172014, 20971012]
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Three-dimensionally ordered mesoporous carbon sphere array (OMCS)-supported Pt nanoparticles (Pt/OMCS) were synthesized and studied as electrocatalysts for the methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR). In the Pt/OMCS, the Pt particles with a mean size of similar to 1.6 nm are homogeneously dispersed on the mesopore walls of the carbon spheres. The Pt/OMCS catalyst exhibits smaller Pt particle size, greater Pt dispersion, larger specific electrochemically active surface area (ECSA), higher activity for MOR and ORR, and better electrocatalytic stability than the carbon black (Vulcan XC-72R)-supported Pt and commercial Pt/C catalysts.
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