| SiO2-Ag纳米复合颗粒自组装的制备与表征 |
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| 引用本文： | 王新,刘孝恒,汪信.SiO2-Ag纳米复合颗粒自组装的制备与表征[J].材料导报,2009,23(Z1). |
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| 作者姓名： | 王新 刘孝恒 汪信 |
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| 作者单位： | 1. 南京理工大学软化学与功能材料教育部重点实验室,南京,210094;巢湖学院化学与材料科学系,巢湖,238000
2. 南京理工大学软化学与功能材料教育部重点实验室,南京,210094 |
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| 摘 要： | 利用自组装法在空气-水界面制备了SiO2薄膜粒子,将所制薄膜粒子先后用AgNO3溶液与Na2S2O3溶液浸泡,并充分曝光,形成了一种形状如"西瓜"的SiO2-Ag纳米复合颗粒.采用X射线衍射(XRD)、透射电子显微镜(TEM)、紫外可见吸收光谱(UV-Vis)对其结构进行了表征和分析,并初步探讨了其结构的形成机理.结果表明,纳米Ag"瓜子"均匀地分散于SiO2"瓜瓤"颗粒中,形成的复合颗粒呈球形,粒径均匀.
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| 关 键 词： | 二氧化硅-银 自组装 纳米复合粒子 |
Preparation and Characterization of Silica-silver Nanoparticles Composite Grain by Self-assembled Technology |
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| WANG Xin,LIU Xiaoheng,WANG Xin.Preparation and Characterization of Silica-silver Nanoparticles Composite Grain by Self-assembled Technology[J].Materials Review,2009,23(Z1). |
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| Authors: | WANG Xin LIU Xiaoheng WANG Xin |
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| Abstract: | SiO2-based air-water interfacial films with nano structure are prepared by self-assembled technology.The films are soaked into silver nitrate aqueous solution and sodium thiosulfate separately.Then the watermelonlike SiO2/AgBr nanocomposite particles are prepared by reaction of silver nitrate and sodium thiosulfate with template agent(CTAB).The feature and structure of nanocomposite particles are characterized by X-ray diffraction,transmission electron microscope (TEM) and ultraviolet visible absorption spectrometer.The results indicate that the silver nanoparticles(melon seeds) are homogenously distributed in silicas(flesh) and pherical with uniform and narrow-dispersed size distribution.The formation mechanism of morphologies of the nanocomposite particles is also investigated. |
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| Keywords: | SiO2-Ag self-assembly nanocomposite particles |
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