Novel synthetic routes to formation of magnetic nanocomposites with noble metals

INOR 151

Anindya Pradhan, apradhan@uno.edu1, Robin Jones2, and Matthew A. Tarr, mtarr@uno.edu2. (1) Advanced Materials Research Institute and Department of Chemistry, University of New Orleans, New Orleans, LA 70148, (2) Department of Chemistry and Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148
Novel synthetic routes to formation of gold-magnetite nanoparticles have been designed by sonochemistry. Treatment of preformed magnetite nanoparticles with ultrasound in aqueous media with dissolved tetrachloroauric acid resulted in the formation of gold-magnetite nanocomposite materials. These materials maintained the morphology of the original magnetite particles. The morphology of the gold particles could be controlled by adjusting experimental parameters, including the addition of small amounts of solvent modifiers such as methanol, diethylene glycol, and oleic acid. Further experiments were conducted with other metals such as silver and titanium. Morphology and properties of nanocomposites were analyzed by TEM, EDS, SQUID and ICP. The nanocomposite materials were magnetic and exhibited optical properties similar to gold nanoparticles. Magnetic nanoparticles have wide range of potential applications including uses as medical diagnostic tools, drug delivery systems, and biosensors.
 

Nanoscience: Synthesis
7:00 PM-9:00 PM, Sunday, 13 March 2005 Convention Center -- Hall D, Poster

Division of Inorganic Chemistry

The 229th ACS National Meeting, in San Diego, CA, March 13-17, 2005