Cu/NbO, Fe/NbO and Cu-Fe/NbO applied in salicylic acid degradation: Parameters studies and photocatalytic activity.

This study describes the synthesis of Cu/NbO, Fe/NbO, and Cu-Fe/NbO catalysts obtained by incorporating copper and/or iron metals into niobium pentoxide (NbO). The new materials were characterized by the following techniques: Thermogravimetric Analysis (TA), surface and pore analysis, X-ray diffractometry (XRD), and Fourier Transform Infrared Spectroscopy (FT-IR). The catalyst was applied in the photocatalytic degradation of salicylic acid (SA).

Functioned catalysts with magnetic core applied in ibuprofen degradation.

In the present work, the performance of Ag/ZnO/CoFeO magnetic photocatalysts in the photocatalytic degradation of ibuprofen (IBP) was evaluated. This study considered the use of pure Ag/ZnO (5% Ag) and also the use of the Ag/ZnO/CoFeO magnetic catalysts containing different amounts (5, 10 and 15% wt) of cobalt ferrite (CoFeO). The catalysts were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoacoustic spectroscopy.