TiO(2) monoliths with a hierarchical macro/mesopores have been successfully fabricated by using cellulose acetate membrane template. The TiO(2) particles were deposited as coherent layers on the walls of cellulose acetate framework, which was removed by calcination without significant disruption of TiO(2) framework. SEM images of the TiO(2) monolith showed three-dimensional TiO(2) frameworks with the size of the pores in the range of 30 nm similar to 15 mu m. By decreasing the concentration of the sols an overall thinning of the walls and increased shrinkage were observed. This revealed that dilution of the dispersions led to insufficient coating.


Yao, Jianxi;  Wang, Dan

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