Photocatalytic functional material and method of production...

Details Photocatalytic functional material and method of production... Photocatalytic functional material and method of production...

B - Operations, Transporting

01

J

B01J 35/00 (2006.01) B01J 37/00 (2006.01)

Patent

CA 2204768

A photocatalytic functional material having an excellent photocatalytic activity even by a low temperature heat treatment and having a high mechanical strength of the surface. The photocatalytic functional material of the present invention comprises a surface layer (a photocatalytic functional layer) containing a photocatalyst, an electron- trapping metal and a photodegradation-resistant matrix. Though the major proportion of the photocatalyst (TiO2 particles, and the like) in the photocatalytic functional layer are covered with the photodegradation-resistant matrix (a thermosetting resin, and the like), the electron-trapping metal effectively traps the electrons generated by the photocatalytic reaction, retains positive holes and generates active oxygen species, so that the photocatalytic function such as deodorant and antimicrobial activities can be fully exhibited.

Matériau fonctionnel photocatalytique présentant une excellente activité photocatalytique même en cas de traitement thermique à basse température et présentant une surface à grande résistance mécanique. Ce matériau fonctionnel comprend un photocatalyseur, un métal de capture d'électrons et une couche superficielle (couche fonctionnelle photocatalytique) contenant une matrice résistant à la photodégradation. Bien que le majeure partie du photocatalyseur (particules de TiO2) dans la couche fonctionnelle photocatalytique soit recouverte par la matrice résistant à la photodégradation (résine thermodurcissable), le métal de capture d'électrons capture efficacement les électrons générés par la réaction photocatalytique, maintient les orifices et génère l'amorce d'oxygène actif. Ainsi, la fonction catalytique telle que les effets désodorisants et antimicrobiens peut être exploitée pleinement.

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