Fourier Transform Infrared Spectroscopic Study of the Photocatalytic Degradation of Cancerous Cells on Titanium Dioxide

The method of attenuated total internal reflection Fourier transform IR spectroscopy has been used to study the oxidation kinetics of the biomolecular components of the eukaryotic cancerous HeLa cells initiated by the photogenerated charges on TiO2. It was shown that the organic material of the cells on the porous film of the TiO2 nanoparticles was mineralized in a such way that the TiO2 surface was purified. The basic organic groups of Amide-I, Amide-II and phosphate were oxidized at different rates. Amide-II oxidized most rapidly, then followed Amide-I. The phosphate was the most resistant to oxidation. DOI: 10.1134/S0018143910050139