Josef Krýsa is the leader of the group Photocatalysis at the Department of Inorganic Technology, University of Chemistry and Technology Prague and expert advisor in the group of Photocatalytic materials and technologies in Technopark Kralupy.
Our main objective is to develop photocatalytic materials (e.g. TiO2), which have application in the cleaning of air and water. Another usage of the photocatalyzators is in the field of production so-called self-cleaning surfaces, which are able (after irridation with UV light) to create a superwettable surface and generate on the surface highly reactive radicals able to dismantle solid organic dirt. Thanks to this is the irradiated surface kept clean and is also able to purify the environment from toxic substances. To this is closely related the development of reliable and simple methods (based on the colour change of special dyes) to verify the activities of self-cleaning surfaces such as glass, tile, paint, concrete and textiles. An important content of laboratory of photocatalysis is also the development of photocatalytic materials for solar decomposition of water into hydrogen and oxygen.
Principle of photocatalysis