Development of TiO-SiO Photocatalysts Having a Microhoneycomb Structure by the Ice Templating Method.

Immobilization of TiO-based photocatalysts usually suffers from lowered surface area and mass transfer limitation compared with their suspended counterpart. In this work, TiO-SiO monolithic photocatalysts having straight macropores, called microhoneycombs, were synthesized. The obtained samples had straight macropores with a diameter in the range of 15-40 μm formed by walls having a thickness up to 5 μm.