Materials Chemistry and Physics, Vol.182, 402-408, 2016
Macrostructure-controlled titania ceramics derived from particle-stabilized emulsions: Preparation and photocatalysis performance
To enhance the photocatalytic efficiency and resolve the titania recovery problem, we studied the processing of particle-stabilized emulsions for preparing porous TiO2 ceramics in this study. The samples were synthesized with different solid contents from 15 vol% to 30 vol%. The solid content markedly affected the pore structure and morphology. When the solid content in the precursor was controlled at 30 vol%, the sample had the three-dimensional interpenetrating structure with high porosity and uniform pore structure and the average pore size was about 3-18 mu m. With excellent pore structures, the samples show the high adsorption capacity and excellent photocatalysis performance for Rhodamine B. Furthermore, when porous TiO2 ceramic was covered by a 2 nm carbon film layer (C/TiO2), the adsorption efficiency and photocatalytic degradation rates were efficiently improved. (C) 2016 Published by Elsevier B.V.