A Novel Route Toward Fabrication of Twofold-Shaped CeO2 Dendrites

作者：Zhang Dongen^*; Tong Zhiwei; Li Shanzhong; Zhang Xiaobo; Ying Ailing

来源：European Journal of Inorganic Chemistry, 2008, (35): 5476-5481.

DOI：10.1002/ejic.200800555

• Nanotechnology
• Crystal growth
• Absorption
• Cyclic voltammetry

Highly uniform twofold-shaped CeO2 dendrites were successfully prepared in large quantities by using an approach that involves the thermal decomposition of the precursor. The precursor with an average size of 10 mu m was prepared from the reaction of Ce(NH4)(2)(NO3)(6) with CO(NH2)(2) at 160 degrees C in a water/diethanolamine (DEA) complex solution, The influence of DEA on dendrite formation is discussed. The dendritic pattern of precursor is almost retained in the as-pre-pared product. The optical absorption spectrum indicates that the CeO2 dendrites have a direct bandgap of 3.42 eV The electrochemical characteristic of the CeO2 dendrites structures have been studied by cyclic voltammetry. It was found that the CeO2 dendrites can greatly improve the electron-transfer ability.

• 出版日期2008-12
• 单位淮海工学院