Synthesis and Characterization of Monodisperse Hollow Fe₃O₄ Nanoparticles

Abstract

Controlled oxidation of amorphous core–shell Fe–Fe3O4 nanoparticles in a simple solution-phase process affords monodisperse hollow Fe3O4 nanoparticles. Self-assembly of the monodisperse hollow Fe3O4 nanoparticles leads to superlattice arrays (see TEM image). The synthesis offers a general approach to hollow iron oxide and core–shell–void Fe–Fe3O4 nanoparticles that may have potential applications in catalysis and high-frequency electromagnetic devices. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z700677_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.