کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
597645 1454077 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Selective removal of particle cores to fabricate manganese carbonate hollow spheres and composite microcapsules
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Selective removal of particle cores to fabricate manganese carbonate hollow spheres and composite microcapsules
چکیده انگلیسی

We report here the finding of different dissolution rate between the core and shell of a manganese carbonate particle, which was prepared by mixing NH4HCO3 and MnSO4 at room temperature. Based on the results of X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), we believe that the denser crystallites in the shells have a stronger stability against acid decomposition compared with the randomly and loosely assembled crystallites in the particle cores. Hollow spheres were then fabricated by utilizing the difference of decomposition rate between the particle shells and the cores in acidic solution at room temperature. Furthermore, by incorporating polyelectrolyte multilayers onto the particles prior to core decomposition, hybrid organic/inorganic hollow spheres were successfully produced.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 295, Issues 1–3, 1 March 2007, Pages 233–238
نویسندگان
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