纳米CeO2的水热法制备及其光学性能研究
Hydrothermal Synthesis of CeO2 Nanoparticles and Their Optical Properties
DOI: 10.12677/NAT.2019.93013, PDF,    科研立项经费支持
作者: 余 波, 何成平, 王宇君, 周 婷, 孟凡明*：安徽大学，物理与材料科学学院，安徽 合肥
关键词: 纳米CeO2；水热法；缺陷；紫外吸收；能隙；Nano-CeO2； Hydrothermal Method； Defects； Ultraviolet Absorption； Energy Gap
摘要: 运用水热法，以Ce(NO3)3•6H2O为铈源、CO(NH2)2为沉淀剂，在140℃下分别水热反应5 h、9 h、11 h和在160℃下反应11 h，成功制备了CeO2纳米颗粒。通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、荧光光度计(PL)和紫外可见分光光度计(UV-Vis)，分别对合成样品的结构、形貌、缺陷和光学性能进行了表征。结果表明：随着反应时间的延长和温度的升高，颗粒的团聚现象加重。样品缺陷随时间的延长先减小后增多，随温度的升高而增多。对样品的光学性能进行了研究，四个样品都显现出了很好的紫外线吸收能力，对可见光透射性良好。
Abstract: CeO2 nanoparticles have been successfully synthesized by hydrothermal method at 140˚C for 5 h, 9 h, 11 h and at 160˚C for 11 h, respectively, using Ce(NO3)3•6H2O as the cerium source, CO(NH2)2 as precipitants. The structure, morphology, defects and optical properties of the samples were char-acterized by X-ray diffraction (XRD), scanning electron microscope (SEM), photoluminescence (PL) spectra and Ultraviolet-visible (UV-Vis) spectroscopy. The results show that the agglomeration of the particles increases with the reaction time and temperature. The defects of the samples first decrease and then increase with the increase of time and increase with the increase of temperature. The optical properties of the samples are investigated. The four samples all show excellent ultraviolet absorption ability and good transmittance to visible light.
文章引用：余波, 何成平, 王宇君, 周婷, 孟凡明. 纳米CeO2的水热法制备及其光学性能研究[J]. 纳米技术, 2019, 9(3): 107-112. https://doi.org/10.12677/NAT.2019.93013

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