Visible-Light-Driven Peroxymonosulfate Activation for Accelerating Tetracycline Removal Using Co-TiO2 Nanospheres

Heterogeneous catalysts have been widely used for peroxymonosulfate (PMS) activation to remove persistent contaminants in water. This study successfully prepared cobalt-doped TiO2 using a simple two-step approach activating PMS tetracycline (TC). The batch experiments showed complete TC degradation within 25 min caused by Co-TiO2 (0.1 g/L) of (1 mM) under visible light. system also demonstrated excellent catalytic efficiency various water environments, such as artificial seawater, tap water, and wastewater. According the radical capture tests electron spin resonance analysis, contribution active species involved with Vis/Co-TiO2/PMS were following order: 1O2> SO4•−> O2•−> •OH. possible pathway was proposed intermediate identification Fukui function calculation. provides promising method toward organic pollutants novel perspective on rational design competent stable catalysts.