Alloy nanocrystals encapsulated with alkyl dithiolates ("core-shell" nanoparticles) serve as an intriguing class of nanostructured catalysts. This paper reports the preliminary results of an electrochemical quartz-crystal nanobalance (EQCN) investigation of mass transport associated with the catalytic activation and methanol oxidation at nanostructured Au-Pt nanocrystals. It is demonstrated that the catalytic activation and oxidation of methanol are accompanied by mass fluxes across the nanostructured film. The mass transport involves oxidation-reduction of surface oxygenated species, methanol adsorption and oxidation, solvent breath and product release. The implication of the EQCN results to the understanding of the core-shell nanostructured catalytic mechanism is discussed.
|Original language||English (US)|
|Number of pages||5|
|State||Published - May 8 2001|
- Alloy nanoparticles
- Methanol electrooxidation
ASJC Scopus subject areas