The mesoporous silica microspheres were prepared in EtOH-H2O solution by using dodecyl amine functioned as molecular template and catalyst. The mesoporous silica microspheres were arrayed on the titania film, which was prepared by a spin-coating method of W/O microemulsions containing titania-tetraisopropoxide as a titania source. When the ethanol was used as the dispersion medium, the single array of mesoporous silica microspheres was obtained on the titania film by a dip-coating method, but in the case of water, the multiple array was obtained on the titania film. The irradiation effect of black-light on the array states during the dip-coating processes was hardly observed, but the super-hydrophilic effect was observed for the spread of silica particles dispersed in water on the titania film. Next, the mesoporous silica microsphere adsorbed rhodamine B was also arrayed on the titania film by dip-coating. The adsorbed rhodamine B was photocatalytically degradated by the irradiation of black light. The degradation rate of rhodamine B for the multiple arrays was faster than that for single array.
