Abstract

A continuous laminar flow reactor for the synthesis of nanopowder in microemulsion is described. The reactor is suitable for separated handling with nucleation, growth, and stabilization processes. The synthesis of iron oxide nanoparticles was selected as a model case. A water−sodium dodecyl sulphate−cyclohexene system was used as the microemulsion system for dissolving reactive aqueous solution, precursor, and a particle stabilizer. The product was purified and transferred to the aqueous phase. The result was a colloid solution of iron oxide nanoparticles in water of 50–200 nm in size with a zeta potential ranging from –25 to –57 mV. The product was characterized by UV-VIS spectroscopy, powder XRD, dynamic light scattering, electron microscopy, and electron diffraction. The results showed that water-in-oil microemulsion method is useful for the synthesis of nanopowders to obtain large amounts of stable product.

中文翻译：

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油包水型微乳连续流合成氧化铁纳米粒子

摘要

描述了用于在微乳液中合成纳米粉末的连续层流反应器。该反应器适用于成核，生长和稳定化工艺的分离处理。选择氧化铁纳米颗粒的合成作为模型实例。水-十二烷基硫酸钠-环己烯体系用作微乳液体系，用于溶解反应性水溶液，前体和颗粒稳定剂。将产物纯化并转移至水相。结果是氧化铁纳米粒子在50-200 nm大小的水中的胶体溶液，ζ电位范围为–25至–57 mV。通过UV-VIS光谱，粉末XRD，动态光散射，电子显微镜和电子衍射对产物进行表征。