Preparation and Photocatalytic Activity of Robust Titania Monoliths for Water Remediation

TiO2 monoliths were prepared, characterized, and evaluated for photocatalytic performance. The TiO2 monoliths were found to have an interconnected void lattice and a bimodal porous structure with macropores and mesopores after calcination at 500-700 degrees C. Monoliths calcined at 500 degrees C had high specific surface area (93.1 m(2)/g) and porosity (68%), which were maintained after calcination at 700-1100 degrees C (51-46%). The calcined monoliths had relatively high Vickers hardness (similar to 104) despite their porous structure. Monoliths calcined at 500 and 700 degrees C exhibited high performance because of their high specific surface area.