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A novel flower-like 3-dimensional ZnO hierarchical structure with high uniformity has been fabricated on a large scale through a facile aqueous solution route at room temperature. The as-prepared ZnO hierarchical structures with a size of about 1μm were assembled by large amounts of interleaving nanosheets, which have a uniform thickness of about 15nm and a well-crystalline structure with {110} planes...
Using a combination of scanning electron microscopy and X-ray diffraction techniques, the mechanism for ZnO formation was studied by simply heating an aqueous solution containing zinc salts and ammonium hydroxide to 85°C. Growth of ZnO occurred via the initial precipitation of stable ε-Zn(OH) 2 microcrystals and subsequent formation of ZnO under these conditions. By monitoring an intermediate...
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