Silica nanoparticles for template synthesis of supported Pt and Pt-Ru electrocatalysts.
A simple method was developed for the template synthesis of silica-supported Pt and bimetallic Pt-Ru nanocatalysts. The synthesis used amine-functionalized silica nanoparticles as both template and support for the formation of metal nanoclusters with a precise composition, narrow size distribution, uniform shape and close spatial association. The nanocatalysts were compared with a commercial Pt-C catalyst used in fuel cell applications. Electrochemical measurements of methanol oxidation demonstrated higher catalytic activity for silica-supported Pt nanocatalysts and a reduced CO poisoning effect from co-templating of Pt and Ru.
Li
Aize
A
Department of Chemistry, University of North Dakota, Grand Forks, ND 58202-9024, USA.
Zhao
Julia Xiaojun
JX
Pierce
David T
DT
D000588:Amines / Q000737:chemistry; D002384:Catalysis; D011211:Electric Power Supplies; D004563:Electrochemistry; D000432:Methanol / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D010984:Platinum / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties
D000588:Amines; D009942:Organometallic Compounds; D010984:Platinum; D012822:Silicon Dioxide; D012428:Ruthenium; D000432:Methanol