Optimization and development of novel photocatalysts, are one of the most relevant scientific areas of the Unit. In accordance with this approach, it has been tested different  types of shapes, supports and morphologies. Furthermore, it has been prepared immobilized bi-functional photocatalyst based on an adsorbent and a semiconductor. For this aim, have been selected numerous adsorbent materials as: magnesium silicates, zeolites, clays and carbonaceous materials.