Comparison of TiO₂ and ZnO for Heterogeneous Photocatalytic Activation of the Peroxydisulfate Ion in Trimethoprim Degradation.

ABSTRACT: The persulfate-based advanced oxidation process is a promising method for degrading organic pollutants. Herein, TiO₂ and ZnO photocatalysts were combined with the peroxydisulfate ion (PDS) to enhance the efficiency. ZnO was significantly more efficient in PDS conversion and SO₄^•- generation than TiO₂. For ZnO, the PDS increased the transformation rate of the trimethoprim antibiotic from 1.58 × 10^-7 M s^-1 to 6.83 × 10^-7 M s^-1. However, in the case of TiO₂, the moderated positive effect was manifested mainly in O₂-free suspensions. The impact of dissolved O₂ and trimethoprim on PDS transformation was also studied. The results reflected that the interaction of O₂

SUBMITTER: Nafradi M 

PROVIDER: S-EPMC10489049 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature