| Hydrothermal Synthesis and Characterization of Ce_(1-x)Mn_xO_(2-δ) Solid Solutions |
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| 引用本文： | 张国芳,李莉萍,李广社,邱晓清.Hydrothermal Synthesis and Characterization of Ce_(1-x)Mn_xO_(2-δ) Solid Solutions[J].结构化学,2010,29(2):307-313. |
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| 作者姓名： | 张国芳 李莉萍 李广社 邱晓清 |
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| 作者单位： | State;Laboratory;Structural;Chemistry;Fujian;Institute;Research;Structure;Matter;Chinese;Academy;Sciences;Photocatalysis;Fuzhou;University;Rare;Earth;School;Inner;Mongolia;Science;Technology; |
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| 基金项目： | Supported by NNSFC (Nos 20671092, 20773132, 20771101);;National Basic Research Program of China (No 2007BAE08B01, 2009 CB613306) |
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| 摘 要： | Nanocrystals of Ce1-xMnxO2-δ(x=0.00,0.05,0.10,0.15,and 0.20) were synthesized by a hydrothermal reaction route.The solid solutions crystallized in a cubic fluorite structure with a particle size in the range of 11～15 nm.The incorporation of Mn ions in CeO2 resulted in a lattice volume reduction.Mn ions showed a mixed valence state of +2,+3 and +4 in CeO2 lattice.An obvious red-shift of the absorption threshold edge was observed from the UV-visible spectrum.Compared with the bulk CeO2,Ce1-xMnxO2-δ nanocrystals exhibited a lower releasing oxygen temperature as indicated by TPR technique.
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| 关 键 词： | TPR表征 水热合成 固溶体 紫外可见光谱 Fe2O3 水热反应 萤石结构 颗粒大小 |
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