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Fabrication of three-dimensional dendrite-like CeO2 crystallites via simple template-free solution route |
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| Authors: | DongEn Zhang Wei Wu ShanZhong Li GuiQuan Han XingYou Xu |
| Institution: | a Department of Chemical Engineering, HuaiHai Institute of Technology, Lianyungang 222005, People's Republic of China b Department of Electronics Engineering, Southeast University, Nanjing 210018, People's Republic of China c SORST, Japan Science and Technology Agency (JST), Japan |
| Abstract: | Highly uniform three-dimensional dendrite-like CeO2 crystallites were successfully prepared in large quantities with a thermal decomposition of precursor approach applied. The precursor with an average size of 10 μm was prepared in an aqueous solution containing Ce(NO3)3·6H2O, CO(NH2)2 and ammonia at 160 °C with no additional phase. The influence of ammonia on the dendrites formation was discussed. The dendritic pattern of precursor almost remained in the as-prepared product. The optical absorption spectrum indicates that CeO2 dendrites have a direct band gap of 3.52 eV. |
| Keywords: | A Nanostructures B Crystal growth C X-ray diffraction D Optical properties |
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