| Synthesis and characterization of BaCeO3 nanocrystals via solvothermal-based method |
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| 作者姓名： | 徐超 朱俊武 杨绪杰 陆路德 汪信 |
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| 作者单位： | Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China |
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| 基金项目： | 国家自然科学基金，中国博士后科学基金，江苏省博士后科学基金 |
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| 摘 要： | A facile approach to preparing well-dispersed nanocrystals of BaCeO3 was developed by a combination of solvothermal and annealing processes. The precursor consisted of amorphous BaCO3 and CeO2, and the conversion of the precursor to crystalline BafeO3 nanocrystals occurred upon heat treatment at a relatively low temperature. The as-processed BaCeO3 had an orthorhombic structure and the average size of such crystals was approximately 80 nm. The obtained products were characterized by Fourier Transform Infrared （FT-IR）, X-Ray Diffraction （XRD）, Laser Raman Spectroscopy （LRS）, Scanning Electron Microscopy （SEM）, Energy Dispersive X-Ray Spectrometry （EDS）, and Transmission Electron Microscopy （TEM）. This preparation process could also be used to synthesize doped barium cerate complex oxides Bafe0.95M0.05O3-δ （M=Y, Nd, Gd, and Sm）.
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| 关 键 词： | 分析方法 铈 稀土元素 纳米晶体 |
| 收稿时间： | 2007-03-27 |
| 修稿时间： | 2007-09-25 |
Synthesis and characterization of BaCeO3 nanocrystals via solvothermal-based method |
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| Chao XU, Junwu ZHU, Xujie YANG, Lude LU,Xin WANG,.Synthesis and characterization of BaCeO3 nanocrystals via solvothermal-based method[J].Journal of Rare Earths,2008,26(1):51-54. |
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| Authors: | Chao XU Junwu ZHU Xujie YANG Lude LU Xin WANG |
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| Affiliation: | aKey Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China |
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| Abstract: | A facile approach to preparing well-dispersed nanocrystals of BaCeO3 was developed by a combination of solvothermal and annealing processes. The precursor consisted of amorphous BaCO3 and CeO2, and the conversion of the precursor to crystalline BaCeO3 nanocrystals occurred upon heat treatment at a relatively low temperature. The as-processed BaCeO3 had an orthorhombic structure and the average size of such crystals was approximately 80 nm. The obtained products were characterized by Fourier Transform Infrared (FT-IR), X-Ray Diffraction (XRD), Laser Raman Spectroscopy (LRS), Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray Spectrometry (EDS), and Transmission Electron Microscopy (TEM). This preparation process could also be used to synthesize doped barium cerate complex oxides BaCe0.95M0.05O3-d (M=Y, Nd, Gd, and Sm). |
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| Keywords: | BaCeO3 solvothermal nanosized powder rare earths |
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