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以Ce(NO_3)_3·6H_2O作为铈源、尿素作为沉淀剂、K-30型PVP作为表面活性剂,采用水热法成功制备二氧化铈微结构.采用X射线衍射仪(XRD)、热重/差热分析(TG/DTA)、傅里叶变换红外谱(FT-IR)、扫描电子显微镜(SEM)、拉曼光谱(Raman)、紫外可见近红外分光光度计(UV-Vis)和荧光分光光度计(PL)对此CeO_2样品进行表征,结果表明:制备的CeO_2样品具有萤石立方结构,样品中存在氧空位和Ce~(3+)离子,样品具有较强的紫外吸收和室温光致发光性能.吸收边和拉曼峰位的移动与样品中氧空位和Ce~(3+)离子有关.
Ce (NO_3) _3 · 6H_2O as cerium source, urea as precipitating agent and K-30 type PVP as surfactant were used to prepare the microstructure of cerium oxide by hydrothermal method.X-ray diffraction (XRD) TG / DTA, FT-IR, SEM, Raman, UV-Vis and fluorescence The CeO 2 sample was characterized by spectrophotometer (PL). The results showed that the prepared CeO 2 sample has cubic structure of fluorite, oxygen vacancies and Ce 3+ ions in the sample, and the sample has strong ultraviolet absorption and room temperature light Luminescence Properties The shift of the absorption edge and Raman peak is related to the oxygen vacancies and Ce 3+ ions in the sample.