Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5147831 | International Journal of Hydrogen Energy | 2017 | 6 Pages |
Abstract
Platinum (Pt) nanocrystals of cubic and octopod structures were synthesized via seed-mediated solvothermal growth with monoethanolamine as the solvent. The combination of nanocube and octopod structures was formed using 0.025Â ml seeds loading, while increasing the seeds volume to 0.050Â ml and 0.100Â ml produced nanocube as the primary product. The octopod structure evolves from the overgrown nanocube via kinetic growth mechanism. Pt nanocube formed with 0.050Â ml seeded solution has the potential to serve as a catalyst in formic acid oxidation by virtue of its high electrochemical surface area of 10.93Â m2/g, over that of Pt black at 8.62Â m2/g and resistance to poisonous CO. Nonetheless, it is less catalytically active in ethanol oxidation as depicted by the small electrochemical surface area of 8.64Â m2/g and low current density in longer period.
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Authors
M.D. Johan Ooi, A. Abdul Aziz,