Abstract
Different metal oxide nanostructures including SnO 2 nanowires, SnO 2 nanoparticles, ZnO nanorods, ZnO nanoparticles, Al 2 O 3 nanoparticles, SiO 2 nanoarray, and SnO 2– SiO 2 core–shell nanoparticles, can be selectively synthesized by Self-propagating High-temperature Synthesis (SHS) method with different reaction systems. This method can be easily applied to synthesize metal oxide nanostructures with high yield and excellent purity from low melting point metals in a very short time at low cost without the need for any sophisticated equipment. The composition of reaction system has a crucial influence on the reaction temperature and morphology of the end products. Compared with nanoparticles, nanowires or nanorods can be obtained at lower reaction temperature. And introducing the chemical containing silicon to the reaction system allows the formation of SiO 2 nanoarray and SnO 2– SiO 2 core–shell nanoparticles.
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