Nonaqueous Synthesis of Nanocrystalline Indium Oxide and Zinc Oxide in the Oxygen-Free Solvent Acetonitrile

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• 作者：Jelena Buha ; Igor Djerdj ; Markus Niederberger
• 刊名：Crystal Growth & Design
• 出版年：2007
• 出版时间：January 2007
• 年：2007
• 卷：7
• 期：1
• 页码：113 - 116
• 全文大小：434K
• 年卷期：v.7,no.1(January 2007)
• ISSN：1528-7505

文摘

The nonaqueous preparation of nanocrystalline indium and zinc oxide involving the solvothermal reaction of metalacetylacetonates with acetonitrile is presented. The synthesis approach is characterized by a particularly moderate reaction temperatureof 100 C and by the use of an oxygen-free solvent. The oxygen for the metal oxide formation is supplied by the acetylacetonateligand of the precursor molecules. In the case of In₂O₃, the product consists of crystalline nanoparticles with a spherical morphologyand a narrow size distribution in the range of 3-6 nm. According to transmission electron microscopy (TEM), the ZnO nanoparticlesare in the size range of 15-85 nm, sometimes with well-faceted hexagonal morphology. Powder X-ray diffraction (XRD) data aswell as high-resolution TEM point to mesocrystal formation, i.e., the ZnO nanoparticles are composed of a highly oriented arrangementof smaller nanocrystallites that scatter like a single crystal.