CuS@Cu-CD composites as efficient heterogeneous Fenton-like catalysts for the photodegradation of tetracycline

Abstract

This work, CuS@Cu-CDs composites was synthsized and employed as Fenton-like catalyst. CuS significantly enhanced photodegradation activity of tetracycline (TC) when it decorated with the Cu-doped-carbon dots (Cu-CDs). The influence of...

Cu9S5 and Cu9S5@UiO-66-NH2 composites exhibit excellent Fenton-like photocatalytic activities for the degradation of organic contaminants

“…When illuminated under visible light, Cu 9 S 5 can absorb energy and produce photogenerated e − and h + on its conduction band, then the photogenerated e − combines with O 2 (eqn (1)) to form active radicals ˙O 2 − (eqn (2)). 39 Cu 2+ was reduced by H 2 O 2 to generate Cu + and simultaneously produced HO 2 • (eqn (3)). 40 Undoubtedly, electrons play an important role in improving the efficiency of Fenton reactions by accelerating the Cu 2+ to Cu + process, which promotes the regeneration of Cu 2+ reaction centers.…”

“…O 2 as an electron acceptor triggered the reaction for Rh B degradation over Cu 9 S 5 @UiO-66-NH 2 (eqn ( 6)). 39 Copper undergoes a Fenton-like system reaction with H 2 O 2 to achieve mutual conversion between Cu + and Cu 2+ and produce OH and O 2 À , respectively, as shown in eqn (7) 40 and eqn (8). [40][41][42] Rh B and its intermediate products chelating with Cu 2+ on the surface of Cu 9 S 5 @UiO-66-NH 2 promoted the generation of O 2 À and enhanced the cycle of Cu 2+ /Cu + .…”

Room temperature multiferroic nanostructured Gallium Ferrite based visible light driven photocatalyst for degradation of azine dyes

“…By combining photocatalysis with the Fenton process, the degradation e ciency of cationic dyes like Methyl Violet and Methylene Blue can be signi cantly enhanced, leading to their eventual mineralization and removal from the environment. (Cheng et al 2023) Figure 9 is a representation of photocatalysis process as the visible light is irradiated onto the dyes. The Fig.…”