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三元添加剂水溶液体系中金属银粒子的形貌控制合成 总被引:1,自引:0,他引:1
Single-crystal silver hollow disks and nanorods were prepared by controlled synthesis in a mixed aqueous solution of ternary additives (poly(ethylene glycol) (PEG), methacrylic acid (MAA) and sodium dodecylsulfate (SDS)). The Products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy(SEM). SEM studies suggest that the well-separated silver microdisks with diameter of 2~3 μm and thicknesses of about 200 nm were obtained. The corresponding selected area electron diffraction (SEAD) reveals the single-crystal nature of these hollow silver disks. 相似文献
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三元添加剂水溶液体系制备CaCO3空心球 总被引:2,自引:0,他引:2
利用原位聚合方法, 通过加入一定量的引发剂使甲基丙烯酸原位聚合, 在三嵌段共聚物(P123)、聚甲基丙烯酸(PMAA)和十二烷基硫酸钠(SDS)的三元添加剂混合溶液体系中成功地制备了CaCO3空心球. 采用扫描电子显微镜(SEM)和X射线粉末衍射(XRD)对合成样品的形貌、结构进行了表征. 结果显示, 方解石CaCO3空心球直径约0.5-2 μm. 空心球壁由直径约25-35 nm的圆形粒子组成, 壁厚约100-300 nm. 利用核鄄壳机理解释了空心球结构的形成过程. 相似文献
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