fig11

From: Tribocatalysis: evolution toward efficient heterogeneous catalysis in aqueous solutions

Figure 11. UV-Vis absorption spectra for the degradation of BPA and phenol by TiO₂ nanoparticles under magnetic stirring: (A) 20 mg/L BPA; (B) 20 mg/L BPA with 200 mg/L PMS; (C) 20 mg/L phenol; (D) 20 mg/L phenol with 200 mg/L PMS. (A-D) are reprinted with permission from^[69]. Adhering to the CC BY 4.0 agreement. PMS: Peroxymonosulfate; BPA: bisphenol A; UV-Vis: ultraviolet-visible.