Abstracts: April 2011

摘要

Octahedral, cuboctahedral, branched and ‘rice-like’ Pt NPs were synthesised using a seed-mediated growth route. Pt NPs (3 nm) were prepared and dispersed in oleyl amine to form a seed solution and then Pt(acac)2was added. By adjusting the molar ratio of Pt from Pt(acac)2?and seed NPs, the seed diameter and the addition route of Pt(acac)2, the NPs growth could be controlled to fall into in a kinetic or thermodynamic growth regime. The obtained NPs were supported on C black (Vulcan XC-72). The catalysts synthesised from branched NPs were found to have higher catalytic activity and stability for the oxidation of methanol.