Paramagnetic centers of photocatalysts based on nitrogen-doped titanium dioxide

Kokorin, A.; Konstantinova, E.; Kisch, H.
May 2013
Kinetics & Catalysis;May2013, Vol. 54 Issue 3, p373
Academic Journal
Titanium dioxide doped with nitrogen (N-TiO) was studied by electron paramagnetic resonance spectroscopy. Two types of paramagnetic centers were observed: N and NO. The concentration of these centers depends significantly on temperature and irradiation with visible and UV light. It was established that the energy levels corresponding to the N and NO centers are, respectively, 2.3 and 2.0 eV below the N-TiO conduction band. These centers are involved in the photooxidation of organic compounds on the N-TiO surface.


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