Mesoporous TiO2 has been drawn more attention because of its abundant porous structure, large specific surface area and more cataystic active sites. However, the separation and recovery of suspended small nanostructure TiO2 particles from treated water is very difficult to operate in the practical application process. Usually, small TiO2 particles are immobilized onto a carrier to solve the problem of TiO2 particles separation from liquid phase and avoiding the loss of active component. Unfortunately, a sig...