Solar light–driven photocatalytic degradation and mineralization of beta blockers propranolol and atenolol by carbon dot/TiO2 composite

Recent advances of semiconductor photocatalysis for water pollutant treatment: mechanisms, materials and applications

“…39 (d) The percentage COD reduction of PR and AT by TiO 2 and the 2CDT composite. 48 also found that by appropriately prolonging the sonication time, the overall cavitation effects in the system increased, which in turn led to an increasing degradation rate of diclofenac (DCF). Notably, the photocatalytic mineralization of DCF was demonstrated by measuring the carbon oxygen demand (COD) during degradation (Fig.…”

“…After 80 min of visible light irradiation, the degradation rate of PnP by C-TiO 2 reached 80%, and the photocatalytic activity of the material did not change significantly after three cycles. Ponkshe and Thakur 48 modified TiO 2 (CDT) with electrochemically synthesized carbon dots (CDs), which significantly improved the photocatalytic degradation and mineralization of propranolol (PR) and atenolol (AT). Compared with pristine TiO 2 , the optimized materials showed 3.45-fold and 1.75-fold increases in the degradation rates of PR and AT, respectively, and the mineralization rates reached 76% and 80%, respectively (Fig.…”