| 类球状和棒状Eu_2O_3和Sm_2O_3纳米粒子的合成与表征 |
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| 引用本文： | 夏云生,戴洪兴,何洪.类球状和棒状Eu_2O_3和Sm_2O_3纳米粒子的合成与表征[J].北京工业大学学报,2010,36(1):87-91. |
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| 作者姓名： | 夏云生 戴洪兴 何洪 |
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| 作者单位： | 北京工业大学环境与能源工程学院,北京,100124;北京工业大学环境与能源工程学院,北京,100124;北京工业大学环境与能源工程学院,北京,100124 |
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| 基金项目： | 北京市属市管高等学校“拔尖创新人和计划”项目资助 |
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| 摘 要： | 采用表面活性剂和超声波辅助的沉淀法合成了类球状和棒状多晶Eu2O3和Sm2O3纳米粒子,并用透射电镜(TEM)、选区电子衍射(SAED)、X射线衍射(XRD)、N2吸附-脱附和紫外-可见漫反射(UV-Vis DRS)技术表征了其物理性质.结果表明,以十二烷基硫酸钠作表面活性剂所得产物为类球状体心立方晶相Eu2O3和单斜晶相Sm2O3纳米粒子,比表面积为44~49 m2/g;而以聚乙烯吡咯烷酮作表面活性剂所得产物则是棒状正交晶相Eu2O3和体心立方晶相Sm2O3纳米粒子,比表面积为34~37 m2/g.除了在紫外光区(λ390 nm)有较强的吸收外,类球状和棒状Eu2O3和Sm2O3纳米粒子在可见光区(390 nmλ535 nm)也有不同程度的吸收.该吸光性能差异与所得稀土氧化物的表面形貌和晶体结构有关.
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| 关 键 词： | 稀土 表面活性剂 沉淀法 特定表面形貌 棒状纳米粒子 |
Fabrication and Characterization of Sphere-like and Rod-like Eu_2O_3 and SM_2O_3 Nanoparticles |
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| XIA Yun-sheng,DAI Hong-xing,HE Hong.Fabrication and Characterization of Sphere-like and Rod-like Eu_2O_3 and SM_2O_3 Nanoparticles[J].Journal of Beijing Polytechnic University,2010,36(1):87-91. |
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| Authors: | XIA Yun-sheng DAI Hong-xing HE Hong |
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| Affiliation: | College of Environment and Energy Engineering;Beijing University of Technology;Beijing 100124 |
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| Abstract: | Sphere-like and rod-like Eu2O3 and Sm2O3 polycrystalline nanoparticles were fabricated by using a surfactant-and ultrasonic-assisted precipitation strategy.The physical properties of these nanomaterials were characterized by means of transmission electron microscopic(TEM),selected area electron diffraction(SAED),X-ray diffraction(XRD),nitrogen adsorption-desorption,and ultravioletvisible diffuse reflection spectroscopic(UV-Vis DRS) techniques.It is shown that the sphere-like body-centered cubic Eu2O3 and mo... |
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| Keywords: | rare earth surfactant precipitation method specific surface morphology rodlike nanoparticle |
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