Electrochemical Deposition of Eu3+-Doped CeO2 Nanobelts with Enhanced Optical Properties
Electrochemical Deposition of Eu3+-Doped CeO2 Nanobelts with Enhanced Optical Properties
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DOI：
10.1021/jp1070924
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发表时间：
2011-01
影响因子：
3.7
通讯作者：
Zilong Wang;Gao‐Ren Li;Y. Ou;Z. Feng;Dun-Lin Qu;Y. Tong
中科院分区：
文献类型：
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作者：
Zilong Wang;Gao‐Ren Li;Y. Ou;Z. Feng;Dun-Lin Qu;Y. Tong
近年来，稀土离子掺杂CeO 2因其特殊的光学、磁学和催化性能而受到广泛关注。本文首次报道了一种简单的电化学合成方法，即Eu 3+掺杂CeO 2纳米带，其光学性能得到了很大的改善。采用能谱仪、扫描电子显微镜、透射电子显微镜（TEM）、X射线衍射仪（XRD）和X射线光电子能谱仪（XPS）对合成的Eu 3+掺杂CeO 2纳米带进行了表征。XRD和TEM结果表明，Eu 3+掺杂CeO 2纳米带结晶良好，具有立方晶体结构。XPS结果表明，Eu 3+和Ce 4+共存于所制备的纳米带中，表明成功制备了Eu 3+掺杂的CeO 2纳米带。初步探讨了Eu 3+掺杂CeO 2纳米带的形成机理。通过紫外-维斯吸收光谱研究了样品的禁带宽度与形貌的关系。结果表明，Eu 3+掺杂的CeO 2纳米粒子具有良好的发光性能。
Recently, rare earth (RE) ion-doped CeO2 has attracted much attention for special optical, magnetic, and catalytic properties. First reported in this paper is a facile electrochemical synthesis of Eu3+-doped CeO2 nanobelts with greatly improved optical properties. The synthesized Eu3+-doped CeO2 nanobelts were characterized by energy-dispersive spectrometry, scanning electron microscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results of XRD and TEM indicate that Eu3+-doped CeO2 nanobelts were well crystallized and have cubic crystal structures. The XPS results show Eu3+ and Ce4+ coexist in these prepared nanobelts and indicate Eu3+-doped CeO2 nanobelts were successfully prepared. The formation mechanisms of Eu3+-doped CeO2 nanobelts were preliminarily investigated. The correlation between the band gap energies and the morphologies of these samples was studied by UV−vis absorption spectrum. The results indicate Eu3+-doped CeO2 nanobe...