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http://dx.doi.org/10.4313/JKEM.2011.24.3.256

Synthesis and Cathodoluminescence of Tetrapod and Multipod-shaped ZnO Nanostructures by Oxidation of Zn in Air Atmosphere  

Lee, Geun-Hyoung (Department of Materials & Components Engineering, Dong-eui University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.24, no.3, 2011 , pp. 256-260 More about this Journal
Abstract
ZnO nanostructures with tetrapod, needle and multipod shapes were synthesized without catalysts through a simple thermal oxidation of metallic Zn powder in alumina crucible under air atmosphere. X-ray diffraction data revealed that the ZnO nanostructures had wurtzite structure of hexagonal phase. Energy dispersive X-ray (EDX) spectra showed that the ZnO was of high purity. After the oxidation of Zn powder, white colored product was mainly observed and yellow colored product was observed only a very little on the surface of the oxidized source materials. The white product consisted of tetrapods, while yellow product was composed of needles and multipods. Cathodoluminescece spectra showed that the crystalline quality of tetrapods was better that those of needles and multipods.
Keywords
ZnO; Thermal oxidation; Zn; Air atmosphere; Tetrapod; Needle; Multipod; Cathodoluminescence;
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