Ravindra A V, Behera B C, Padhan P
J Nanosci Nanotechnol. 2014 Jul;14(7):5591-5. doi: 10.1166/jnn.2014.9023.
Face-centered-cubic (fcc) and hexagonal-close-packed (hcp) phases of cobalt monoxide (CoO) nanostructures are prepared using thermolysis route at the same reaction temperature 296 degrees C with synthetic approach conditions. These nanostructures show mixture of nearly spherical and nanoflake morphologies. The structural phases of these nanostructures transform to spinel-Co3O4 by application of heat or Raman excitation laser beam power. The absorbance spectra of fcc and hcp-CoO and Co3O4 nanostructures yield significantly higher values of band gap which can be explained by electron confinement. Such results provide new opportunities for optimizing and enhancing the properties and performance of cobalt oxide nanomaterial.
采用热解路线，在相同反应温度296℃及合成方法条件下制备了面心立方（fcc）和六方密排（hcp）相的一氧化钴（CoO）纳米结构。这些纳米结构呈现出近球形和纳米片状形态的混合。通过加热或拉曼激发激光束功率，这些纳米结构的结构相转变为尖晶石-Co3O4。fcc和hcp-CoO以及Co3O4纳米结构的吸收光谱产生了显著更高的带隙值，这可以用电子限制来解释。这些结果为优化和增强氧化钴纳米材料的性能和表现提供了新的机会。
