Different morphologies of silver nanoparticles (AgNPs) are prepared by reducing silver nitrate with hydrazine hydrate in an aqueous solution in the presence of the anionic surfactant sodium 6,6′-((oxybis(ethane-2,1-diyl))bis(oxy))bis(3-dodecanoylbenzenesulfonate) (SOBS), the cationic surfactant cetyltrimethylammonium bromide (CTAB) and mixtures of these two surfactants as template. By mixing these cationic and anionic surfactants, different aggregates (template) were formed. The properties of the nanoproducts are studied by X-ray diffraction, transmission electron microscopy, energy dispersive X-ray analysis and Fourier transform infrared spectroscopy. The results show that the morphology of the nanosilver can be controlled by changing the ratio of cationic to anionic surfactant in the mixture, resulting in silver nanoparticles with high crystallinity and low aggregation.

中文翻译：

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混合表面活性剂体系在银纳米粒子制备中的作用

在阴离子表面活性剂钠 6,6'-((oxybis(ethane-2,1-diyl))bis(oxy) 存在下，在水溶液中用水合肼还原硝酸银，制备不同形态的银纳米颗粒 (AgNPs) ））双（3-十二烷基苯磺酸盐）（SOBS），阳离子表面活性剂十六烷基三甲基溴化铵（CTAB）和这两种表面活性剂的混合物作为模板。通过混合这些阳离子和阴离子表面活性剂，形成不同的聚集体（模板）。通过X射线衍射、透射电子显微镜、能量色散X射线分析和傅里叶变换红外光谱研究了纳米产物的性质。结果表明，可以通过改变混合物中阳离子与阴离子表面活性剂的比例来控制纳米银的形貌，