Photocatalytic activity of bare colloidal TiO2 nanoparticles (NPs, d~45Å) and
surface modified with dopamine was obtained following degradation reaction of
herbicide RS-2-(4-chloro-o-tolyloxy)propionic acid (mecoprop, MCPP, C10H11ClO3)
under UV light irradiation. Results indicated that inner sphere charge transfer (CT)
complex is formed on the surface of TiO2 NPs due to modification with dopamine
which induced decreasing of the photocatalytic efficacy of TiO2 NPs