Macroporous Silica From Solid-Stabilized Emulsion Templates



Macroemulsions stabilized solely by nanoparticles of modified silica are used to prepare porous silica solid materials (see Figure), following slow evaporation of the two liquids. Both oil-in-water and water-in-oil emulsions can be employed, and the average pore size is close to the original emulsion drop diameter. Spherical or bicontinuous-like pores may form, depending on the properties of the template emulsion.