Degradation of sunscreen agent 2-phenylbenzimidazole-5-sulfonic acid by TiO2 photocatalysis: Kinetics, photoproducts and comparison to structurally related compounds

- TiO2-induced photocatalysis of 2-phenylbenzimidazole-5-sulfonic acid.
- Hydroxyl radical played a key role during photocatalysis.
- Photodegradation pathways included hydroxylation and ring cleavage.
- Frontier electron densities calculation predicted the sites for HO attacking.
- 2-Phenyl substituent stabilized the benzimidazole ring to photocatalysis.