Double‐Walled SnO₂ Nano‐Cocoons with Movable Magnetic Cores

Abstract

Double-walled SnO2 nano-cocoons with movable α-Fe2O3 cores have been prepared by hydrothermal shell-by-shell deposition of polycrystalline SnO2 on ellipsoidal α-Fe2O3/SiO2 core/shell nanotemplates followed by removal of SiO2. The present templating approach also leads to two other nano-architectures, namely single-walled and porous double-shelled nano-cocoons. The α-Fe2O3 cores can be reduced to magnetic Fe3O4 post-synthesis. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2089/2007/c0357_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.