Morphology-selective synthesis, method of gear-like CeO2 microstructures and their optical properties

作者：Zhang, Cheng; Meng, Fanming^*; Wang, Leini; Zhang, Miao; Ding, Zongling

来源：Materials Letters, 2014, 130: 202-205.

DOI：10.1016/j.matlet.2014.05.081

• Optical materials
• CeO2 microstructures
• Hydrothermal method
• X-ray techniques

Gear-like CeO2 microstructures have been successfully synthesized by a CTAB (cetyltrimethyl ammonium bromide)-assisted hydrothermal method using Ce(NO3)(3)center dot 6H(2)O as the cerium source and ammonium hydrogen carbonate as the precipitator. X-ray diffraction (XRD) inferred that the synthesized CeO2 microstructures exhibited a fluorite cubic structure. A scanning electron microscope (SEM) revealed that the CeO2 microstructures have a gear-like microstructure. X-ray photoelectron spectroscopy (XPS) and the Raman spectroscopy reflected the existence of the oxygen vacancies and Ce3+ ions in the bowknot-like CeO2 microstructures. The synthesized CeO2 shows excellent room temperature optical properties, which is likely associated with Ce3+ ions and oxygen vacancies in the gear-like CeO2 samples.

• 出版日期2014-9-1
• 单位大连理工大学; 安徽大学