It was tried to prepare composite particles made of polymer and two kinds of solid powders by forming Pickeringemulsion followed by the drying-in-liquid method and to investigate how the stepwise addition of solid pow...It was tried to prepare composite particles made of polymer and two kinds of solid powders by forming Pickeringemulsion followed by the drying-in-liquid method and to investigate how the stepwise addition of solid powders affected the contained ratio and adhesion ratio of solid powders and the structure of composite particles. Limonene oil dissolving expanded polystyrene and ethylene glycol were adopted as the dispersed phase and the continuous phase, respectively. Magnetite and titanium dioxide were used as solid powders. Magnetite was added before or after formation of the (O/W) dispersion. Titanium dioxide was added at the various elapsed times from addition of magnetite. Titanium dioxide adhered only on the surface of composite particles irrespective of addition time. At the earlier addition of both solid powders, the surface-covering type composite particles were prepared. At the latter addition of titanium dioxide, a part of magnetite adhered on the surface and the remainder was dispersed into composite particle.展开更多
以丙烯酸修饰的聚苯乙烯(PS)胶体晶体为模板,采用"三明治-真空"填充法将钛酸四丁酯的乙醇溶液填充到模板间隙中,煅烧除去模板快速高效制备了表面无覆盖层的三维有序大孔二氧化钛(3DOM Ti O2)材料。制备的3DOM Ti O2具有典型...以丙烯酸修饰的聚苯乙烯(PS)胶体晶体为模板,采用"三明治-真空"填充法将钛酸四丁酯的乙醇溶液填充到模板间隙中,煅烧除去模板快速高效制备了表面无覆盖层的三维有序大孔二氧化钛(3DOM Ti O2)材料。制备的3DOM Ti O2具有典型的反蛋白石结构,孔壁完整且孔径大小均匀,呈六方密堆积的FCC结构。其孔径为230 nm左右,收缩率仅为14%,孔与孔之间由小窗口相连。XRD分析表明,500℃下煅烧制备的3DOM Ti O2为锐钛矿晶型。展开更多
文摘It was tried to prepare composite particles made of polymer and two kinds of solid powders by forming Pickeringemulsion followed by the drying-in-liquid method and to investigate how the stepwise addition of solid powders affected the contained ratio and adhesion ratio of solid powders and the structure of composite particles. Limonene oil dissolving expanded polystyrene and ethylene glycol were adopted as the dispersed phase and the continuous phase, respectively. Magnetite and titanium dioxide were used as solid powders. Magnetite was added before or after formation of the (O/W) dispersion. Titanium dioxide was added at the various elapsed times from addition of magnetite. Titanium dioxide adhered only on the surface of composite particles irrespective of addition time. At the earlier addition of both solid powders, the surface-covering type composite particles were prepared. At the latter addition of titanium dioxide, a part of magnetite adhered on the surface and the remainder was dispersed into composite particle.
文摘以丙烯酸修饰的聚苯乙烯(PS)胶体晶体为模板,采用"三明治-真空"填充法将钛酸四丁酯的乙醇溶液填充到模板间隙中,煅烧除去模板快速高效制备了表面无覆盖层的三维有序大孔二氧化钛(3DOM Ti O2)材料。制备的3DOM Ti O2具有典型的反蛋白石结构,孔壁完整且孔径大小均匀,呈六方密堆积的FCC结构。其孔径为230 nm左右,收缩率仅为14%,孔与孔之间由小窗口相连。XRD分析表明,500℃下煅烧制备的3DOM Ti O2为锐钛矿晶型。
