Chemical and Biomolecular Engineering Faculty Research

Title

Synthesis and Characterization of Ordered Intermetallic Ptpb Nanorods

Document Type

Article

Publication Date

Summer 2007

Abstract

We have demonstrated the synthesis of ordered intermetallic PtPb nanorods by simultaneously reducing platinum acetylacetonate and lead acetylacetonate with a tert-butylamine−borane complex in a mixture of diphenyl ether, adamantanecarboxylic acid, hexadecanethiol, and hexadecylamine. The formation of rodlike morphology is attributed to the preferable incorporation of Pt and Pb adatoms onto sites with high-coordination numbers of the growing low-index surfaces based on a Kossel crystal analysis. These PtPb nanorods can be deposited onto carbon black and show high-catalytic properties toward methanol oxidation. The current mass density of this PtPb/C catalyst is above 700 mA mg-1 Pt, which is significantly higher than that of a commercial PtRu/C catalyst.

Volume

129

Issue

28

First Page

8684

Last Page

8685