| 纳米银的合成与表征——三种微乳体系的比较研究 |
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| 引用本文： | 张万忠,乔学亮,陈建国.纳米银的合成与表征——三种微乳体系的比较研究[J].稀有金属材料与工程,2009,38(7):1254-1258. |
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| 作者姓名： | 张万忠 乔学亮 陈建国 |
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| 作者单位： | 1. 南方医科大学,广东,广州,510515;华中科技大学,湖北,武汉,430074
2. 华中科技大学,湖北,武汉,430074 |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 利用SDS-环己烷-异辛醇-水、AOT-环己烷-水和AOT-十二烷-水等3种微乳体系分别制备纳米银溶胶,利用紫外-可见光谱和透射电镜对形成粒子进行表征,进而探讨纳米银粒子的形成机制.3种体系中纳米银的共振吸收强度依次减小,半峰宽依次增大,最大吸收波长分别为400,428和435 nm;形成粒子均为球形结构,无团聚现象,但粒子的平均粒度和粒度分布存在明显的差异;3种体系中形成粒子的平均粒度分别为6.46,4.03和1.78 nm.微乳体系中球形胶束为纳米银的形成提供一种独特的微观环境,但由于碰撞导致团聚,微乳液中形成粒子的粒度与形貌和胶束的尺寸和形状并不完全一致,实际形成的纳米银粒子具有一定的粒度分布宽度.
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| 关 键 词： | 纳米银粒子 微乳液 可控合成 生长机制 |
| 收稿时间： | 2008/6/27 0:00:00 |
Synthesis and Characterization of Silver Nanoparticles: A Comparison Study of Three Microemulsion Systems |
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| Zhang Wanzhong,Qiao Xueliang and Chen Jianguo.Synthesis and Characterization of Silver Nanoparticles: A Comparison Study of Three Microemulsion Systems[J].Rare Metal Materials and Engineering,2009,38(7):1254-1258. |
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| Authors: | Zhang Wanzhong Qiao Xueliang and Chen Jianguo |
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| Affiliation: | 1. Southern Medical University;Guangzhou 510515;China;2. Huazhong University of Science and Technology;Wuhan 430074;China |
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| Abstract: | Colloidal silver nanoparticles were synthesized respectively in three water-in-oil microemulsions,i.e.,the microemulsion composed of SDS,cyclohexane,isoamylalcohol and water,the microemulsion composed of AOT,cyclohexane and water as well as the microemulsion composed of AOT,dodecane and water. The UV-Vis absorption spectroscopy was used for confirming the formation of silver nanoparticles,and the TEM was also used for elucidating the structure of resultant particles. The UV-Vis spectra show that the maxima ... |
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| Keywords: | silver nanoparticles microemulsion controllable synthesis growth mechanism |
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