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首页> 外文期刊>Journal of Applied Polymer Science >A novel method for the preparation of core-shell nanoparticles and hollow polymer nanospheres
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A novel method for the preparation of core-shell nanoparticles and hollow polymer nanospheres

机译：一种制备核壳纳米粒子和空心聚合物纳米球的新方法

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A one-step method to prepare core-shell nanoparticles and thus hollow nanospheres is reported. The process for the formation of core and shell took place during reaction. Once the core formed, it was covered with the shell substance produced in situ, and thus, the shell hindered the continued growth of the core. Based on this method, we readily obtained core-shell nanoparticles by choosing AgCl, CuS, or Fe(III) diethyldithiocarbamate (FeDEC)(3) as model core substances and the cogel from gelatin and gum arabic as the shell substance. High-resolution transmission electron microscopy (HRTEM) directly revealed the core-shell structure. TEM results showed the average particle sizes were under 100 nm, depending on the core substance and the concentration of substances producing cores. After removal of the core materials, hollow nanospheres resulted, which were directly observed by TEM. The observation further verified the core-shell structure. UV spectrophotometry also gave signals of coated structure and revealed high core content (51.1%) and nearly perfect coating (91.6%). (C) 2003 Wiley Periodicals, Inc. [References: 25]
机译：报道了一种制备核-壳纳米颗粒并因此制备空心纳米球的一步方法。核和壳的形成过程在反应期间进行。核一旦形成，就被原位产生的壳物质覆盖，因此壳阻碍了核的持续生长。基于这种方法，我们可以通过选择AgCl，CuS或Fe（III）二乙基二硫代氨基甲酸酯（FeDEC）（3）作为模型核心物质，并使用明胶和阿拉伯树胶制成的凝胶作为壳物质轻松获得核壳纳米粒子。高分辨率透射电子显微镜（HRTEM）直接显示了核-壳结构。 TEM结果表明，平均粒径在100 nm以下，取决于芯物质和产生芯的物质的浓度。除去核心材料后，得到空心纳米球，可通过TEM直接观察。观察进一步证实了核-壳结构。紫外分光光度法还给出了涂层结构的信号，并显示出高的芯含量（51.1％）和接近完美的涂层（91.6％）。 （C）2003 Wiley Periodicals，Inc. [参考：25]

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