Morphology-controlled synthesis of Co{sub 3}O{sub 4} by one step template-free hydrothermal method
Morphology-controlled synthesis of Co{sub 3}O{sub 4} by one step template-free hydrothermal method
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DOI：
10.1016/j.materresbull.2015.03.006
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发表时间：
2015-07
影响因子：
5.4
通讯作者：
K. Zhou;Jiajia Liu;Panyue Wen
中科院分区：
文献类型：
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作者：
K. Zhou;Jiajia Liu;Panyue Wen
采用一步无模板法水热法合成了不同形貌的Co3O4晶体。用X-射线粉末衍射和拉曼光谱研究了Co3O4的物相和组成。用扫描电子显微镜和透射电子显微镜对合成样品的形貌和结构进行了表征。过氧化氢对Co3O4纳米结构的形态控制起着至关重要的作用。在没有H_2O_2存在的情况下，只能得到钴基前驱体。相反，在H_2O_2存在的情况下，合成了不同形貌的Co3O_4，包括纳米颗粒、纳米圆盘和定义良好的八面体纳米结构。此外，通过UV-Vis光谱研究了得到的Co3O4样品的光学性质。
We had developed a facile synthetic route of Co3O4crystals with different morphologies via one step template-free hydrothermal method. The phase and composition of the Co3O4were investigated by X-ray powder diffraction and Raman spectrum. The morphology and structure of the synthesized samples were characterized by scanning electron microscopy and transmission electron microscopy. The H2O2played a crucial role in morphological control of Co3O4nanostructures. It only obtained Co-based precursor in the absence of H2O2. On the contrary, the Co3O4with different morphologies including nanoparticles, nano-discs and well-defined octahedral nanostructures were synthesized in the presence of H2O2. In addition, the optical property of the obtained Co3O4samples was investigated by UV–vis spectra.