ИСТИНА

In recent years the use of semiconductor nanomaterials in air and water purification systems is under a great interest. Titanium dioxide (TiO2) is one of such promising materials. But some difficulties take place in wide usage of this material. TiO2 is a semiconductor with wide band gap and UV light is required for the activation of it's photocatalytic properties. In this work the nature of paramagnetic centers was identified and photocatalytic properties were investigated in pure and doped TiO2 (N-TiO2 and C-TiO2) obtained by sol-gel method and supercritical flow reactor method. We have used the EPR technique for our investigations because it is sensitive to the detection of radicals and reactions between them.