Tuesday, 24 May 2005

This presentation is part of: NanoScience and Technology Posters

Synthesis and Characterization of Iron Oxide Nanoparticles Derived from Ferritin

Gang Liu, Hazel-Ann Hosein, Sudeep Debnath, Douglas Hausner, and Daniel R Strongin. Temple University, Philadelphia, PA

Metal oxide nanoparticles are of great importance due to their unique size- and shape-dependent optical, magnetic, electronic and chemical properties. Herein we report a novel biological approach to synthesize iron oxyhydroxide nanoparticles (2-6 nm). The general morphology of nanoparticles as well as the electronic structure of a single nanoparticle on Au(111) were characterized with a combination of Atomic Force Microscopy (AFM), Scanning Tunneling Microscopy (STM) and Scanning Tunneling Spectroscopy (STS). The chemical reactivity towards SO2 adsorption of FeOOH nanoparticles were examined using Attenuated Total Reflection Infrared Spectroscopy (ATR-IR). The size dependent properties, e.g,, the band gap energy and geometrical structure, on the chemical performance of FeOOH nanoparticles are discussed.

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