| abstract |
The invention relates to titanium dioxide photocatalysts doped with Fe 3+ ions, which are characterized by a content of pentavalent ions such as niobium, vanadium or phosphorus ions which is equimolar or almost equimolar to that of the Fe 3+ ions. The catalysts can be produced using a sol-gel process, but also by sintering appropriate oxide mixtures. The photocatalyst according to the invention is preferably used as a layer on a substrate which is produced by application to the substrate and subsequent drying and sintering of a corresponding sol or gel on this substrate, but also by application of a paste from the powdery catalyst and a binder to the substrate mentioned can be. The catalyst is suitable for cleaning (waste) water. |