| 纳米Ce1-xLaxO2-δ的微波引诱燃烧合成及其性能表征 |
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| 引用本文： | 郝仕油.纳米Ce1-xLaxO2-δ的微波引诱燃烧合成及其性能表征[J].无机化学学报,2007,23(8):1477-1480. |
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| 作者姓名： | 郝仕油 |
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| 作者单位： | 浙江省固体表面反应化学重点实验室,浙江师范大学化学系,金华,321004 |
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| 基金项目： | 浙江省教育厅资助项目;浙江师范大学浙江省自然科学基金预研项目 |
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| 摘 要： | Nanometer Ce1-xLaxO2-δ solid solutions were synthesized by microwave-induced combustion process us-ing cerium nitrate hexahydrate， lanthanum nitrate hexahydrate and urea as raw materials. The process took only six minutes to obtain La2O3-doped CeO2 nanopowders. The nanopowders were characterized by XRD， Laser Raman spectrum ， UV-Vis spectroscopy，field-emission scanning electron micrograph(FE-SEM)and TEM. The results revealed that the grain size of Ce1-xLaxO2-δ varied from 20 to 40 nm calculated by Scherer formula through the plane of (111)， that oxygen vacancy was produced in the crystal lattices and the concentration of oxygen vacancy was increased with La doping， therefore the covalence of Ce-O bond was strenthened， which results in more intensive UV-C(200～280 nm)absorption. It can be seen from SEM that the porous appearance was obtained. Grain size is no more than 40nm observed from TEM.
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| 关 键 词： | Ce1-xLaxO2-δ 微波引诱燃烧 合成 表征 |
| 文章编号： | 1001-4861（2007）08-1477-04 |
| 修稿时间： | 2007-04-032007-06-07 |
Microwave-induced Combustion Synthesis and Characterizations of Nanometer Ce1-xLaxO2-δ |
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| HAO Shi-You.Microwave-induced Combustion Synthesis and Characterizations of Nanometer Ce1-xLaxO2-δ[J].Chinese Journal of Inorganic Chemistry,2007,23(8):1477-1480. |
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| Authors: | HAO Shi-You |
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| Institution: | Zhejiang Key Laboratory for Reactive Chemistry on Solid Surface, Department of Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004 |
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