Yang L M, Wang Y J, Sun Y W, Luo G S, Dai Y Y
State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
J Colloid Interface Sci. 2006 Jul 15;299(2):823-30. doi: 10.1016/j.jcis.2006.02.043. Epub 2006 Apr 17.
Micrometer-sized silica spheres were prepared using a new pH-induced rapid colloid aggregation method in water-in-oil (W/O) emulsion separately with F127 and the mixture of Pluronic triblock copolymer (F127, P123, or P105) and PEG20000 as templates. All the mesoporous silica spheres exhibited high surface areas (657-1145 m2/g) and large pore volumes (0.46-2.16 ml/g). Through optimizing the synthetic conditions, hard silica spheres with narrow particle size distribution, uniform pore size, and textural pores were obtained. Finally, the mechanism of this synthetic route is discussed.
使用一种新的pH诱导快速胶体聚集方法，分别以F127以及Pluronic三嵌段共聚物（F127、P123或P105）与PEG20000的混合物为模板，在油包水（W/O）乳液中制备了微米级二氧化硅球。所有介孔二氧化硅球均表现出高比表面积（657 - 1145 m²/g）和大孔体积（0.46 - 2.16 ml/g）。通过优化合成条件，获得了粒径分布窄、孔径均匀且具有结构孔的硬二氧化硅球。最后，讨论了该合成路线的机理。
