Abstract
An interesting adsorption capacity for TiO2 nanotubes has been demonstrated in this work using penicillin G (PEG), as the antibiotic model. Isotherms and kinetic studies revealed that PEG adsorption followed the Langmuir model and adsorption kinetic was described by the pseudo-second-order kinetic. The best adsorption capacity was observed for TiO2 nanotubes free of beta-Cyclodextrin (beta-CD). The adsorption of the PEG onto TiO2 nanotubes is inhibited by beta-CD due to steric hindrance. Interesting photodegradation properties of PEG under UV were achieved using TiO2 nanotubes nanomaterials free of beta-CD.