The practical application of photocatalysts usually requires immobilization of the photocatalyst in several types of reactor configurations, so that the photocatalyst can be used continuously for treating aqueous or gaseous effluent streams and the expensive process of ultrafine particle separation and re-dispersion can be avoided. Different research groups have tried to immobilize TiO2 on various materials,such as, on the reactor wall, pipes, fiberglass mesh, beads, glass fiber, etc[1].