Syntheses of metastable AuPt alloy nanoparticles and nanowires

INOR 762

Shenghu Zhou, shhuzhou@yahoo.com1, Bryan W. Eichhorn, eichhorn@umd.edu1, and Greg Jackson2. (1) Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, (2) Department of Mechanical Engineering, University of Maryland, Collge Park, MD 20742
Au and Pt are immiscible in a wide range of composition and temperature, and usually prepared by heat treatment in an arc-furnace. Here we present a low temperature solution method to synthesize AuPt nanoparticles and nanowires by a butyllithium reduction method. Butyllithium rapidly reduces the Au and Pt precursors to zero-valent state. This rapid reduction method can trap the metastable phase, and generate anisotropic nanomaterials by varying experimental conditions.The mechanism of anisotropic growth will be discussed.These works provide important information about syntheses of metastable and anisotropic nanomaterials.
 

Nanoscience: Synthesis
7:00 PM-10:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster

Division of Inorganic Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006