| AOT微乳体系中纳米银的可控合成及其紫外-可见光谱研究 |
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| 引用本文： | 张万忠,乔学亮,罗浪里,陈建国.AOT微乳体系中纳米银的可控合成及其紫外-可见光谱研究[J].光谱学与光谱分析,2009,29(3). |
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| 作者姓名： | 张万忠 乔学亮 罗浪里 陈建国 |
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| 作者单位： | 1. 南方医科大学药学院,广东广州,510515;华中科技大学材料学院,材料成形与模具技术国家重点实验室,湖北,武汉,430074
2. 华中科技大学材料学院,材料成形与模具技术国家重点实验室,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： | 在以琥珀酸二异辛酯磺酸钠(AOT)为表面活性剂、环己烷为连续相形成的W/O型微乳体系中.用增溶于微乳液水核中的AgNO3为银源、水合肼为还原剂制备了纳米银溶胶,利用UV-Vis光谱分析了Ag-NO3的浓度、AOT的浓度、还原剂的种类和水与表面活性剂的物质的量比(W)等参数对形成粒子数量及平均粒径的影响,为纳米银粒子的可控合成和纳米银的UV-Vis光谱解析提供了新的依据.研究表明,适当增大AgNO3的浓度,有利于形成粒径较小的纳米银粒子;W值增大,形成粒子的平均粒径和粒子数量明显增加.和NaBH4相比,水合肼在反胶束中的溶解性能较好,有利于微乳液反胶束中Ag+的还原.增大AOT的浓度,在一定范围内胶束对反应物的增溶能力增强,胶束的半径也相应减小,有利于形成数量较多、平均粒径较小的纳米银粒子.
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| 关 键 词： | 纳米银 AOT微乳液 可控合成 UV-Vis光谱 |
Controllable Synthesis and UV-Vis Spectral Analysis of Silver Nanoparticles in AOT Microemulsion |
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| ZHANG Wan-zhong,QIAO Xue-liang,LUO Lang-li,CHEN Jian-guo.Controllable Synthesis and UV-Vis Spectral Analysis of Silver Nanoparticles in AOT Microemulsion[J].Spectroscopy and Spectral Analysis,2009,29(3). |
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| Authors: | ZHANG Wan-zhong QIAO Xue-liang LUO Lang-li CHEN Jian-guo |
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| Institution: | ZHANG Wan-zhong1,2,QIAO Xue-liang2,LUO Lang-li2,CHEN Jian-guo2 1.School of Pharmaceutical Science,Southern Medical University,Guangzhou 510515,China 2.State Key Laboratory of Material Processing , Die & Mould Technology,Huazhong University of Science , Technology,Wuhan 430074,China |
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| Abstract: | Colloidal silver nanoparticles were synthesized in water-in-oil microemulsion using silver nitrate solubilized in the water core of a microemulsion as source of silver ions,hydrazine hydrate solubilized in the water core of another one as reducing agent,cyclohexane as the continuous phase,and sodium bis(2-ethylhexyl) sulfosuccinate(AOT) as the surfactant.The main factors affecting the formation of silver nanoparticles were systematically studied.Ultraviolet-visible(UV-Vis) spectra were used for analyzing th... |
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| Keywords: | Nanosilver AOT-based microemulsion Controllable synthesis UV-Vis spectra |
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