| Ag@SiO2复合纳米粒子的光化学还原法制备及表征 |
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| 引用本文： | 叶录元,李贵安,朱庭良,邓仲勋.Ag@SiO2复合纳米粒子的光化学还原法制备及表征[J].硅酸盐通报,2009,28(2):269-273. |
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| 作者姓名： | 叶录元 李贵安 朱庭良 邓仲勋 |
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| 作者单位： | 陕西师范大学物理学与信息技术学院,西安,710062 |
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| 基金项目： | 国家自然科学基金，陕西省自然科学基础研究计划 |
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| 摘 要： | 采用光化学还原法在大颗粒负载型SiO2表面上成功制备了负载型Ag@SiO2复合纳米粒子,利用透射电子显微镜、X射线衍射和紫外-可见分光光度计等分析方法对样品进行了表征.结果表明,球形银纳米粒子均匀分散于球形SiO2复合粒子表面,复合粒子粒径在150～180 nm,且颗粒均一、分散性好.银粒子的粒径在10～15 nm,样品中银粒子具有良好的面心立方结构,晶型很好,银粒子的等离子共振吸收的最大峰位于474 nm.
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| 关 键 词： | 纳米银粒子 二氧化硅 复合纳米粒子 光化学还原法 |
Prepartion and Characterization of Ag@SiO_2 Composite Nanoparticles by Photochemical Reducing Approach |
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| YE Lu-yuan,LI Gui-an,ZHU Ting-liang,DENG Zhong-xun.Prepartion and Characterization of Ag@SiO_2 Composite Nanoparticles by Photochemical Reducing Approach[J].Bulletin of the Chinese Ceramic Society,2009,28(2):269-273. |
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| Authors: | YE Lu-yuan LI Gui-an ZHU Ting-liang DENG Zhong-xun |
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| Affiliation: | College of Physics and Information Technology;Shaanxi Normal University;Xi'an 710062;China |
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| Abstract: | The silver@silica (Ag@SiO2) composite nanoparticles were prepared by photochemical approach,and samples were characterized by transmission electron microscope (TEM),X-ray diffraction (XRD) and ultraviolet visible (UV-Vis) absorption spectroscopy. The results indicate that spheric silver nanopaticles are homogenously distributed on the surface of spheric silica composite grains,the average size of composite grains is 150-180 nm,and it has good uniformity and dispersibility. Silver nanoparticles (10-15 nm) ha... |
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| Keywords: | silver nanoparticles SiO2 composite nanoparticles photochemical reducing approach |
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