Heterogeneous Fenton degradation of persistent organic pollutants using natural chalcopyrite: effect of water matrix and catalytic mechanism

Chalcopyrite as an oxidants activator for organic pollutant remediation: A review of mechanisms, parameters, and future perspectives

“…One of the prominent features of chalcopyrite catalyst is the possibility of performing both Fenton and Fenton-like reactions due to the release of Fe 2+ and Cu + decomposition of H 2 O 2 to form ROS (Eqs. 1,7- 9) [ 36 , 68 ].…”

“…However, the reaction between Fe 3+ and Cu + in CuFeS 2 causes the improvement of the Fe 2+ /Fe 3+ and Cu + /Cu 2+ cycles. Besides, the sulfur through reducing Cu 2+ and Fe 3+ enhances the catalytic activity of CuFeS 2 [ 68 ].…”

Solar-Induced Photocatalytic Degradation of Reactive Red and Turquoise Dyes Using a Titanium Oxide/Xanthan Gum Composite

“…Emerging technologies, such as advanced oxidation processes (AOPs), are becoming more enticing as alternatives due to their broad range of applications in the elimination of toxic pollutants [10,11]. Among different AOP techniques, photocatalytic oxidations have been highly promoted as inexpensive approaches with good removal effectiveness compared to other AOPs [11,12]. The mechanism of photocatalysis is primarily described by the semiconductors' capability to generate charge carriers under light irradiation, followed by the generation of free radicals such as OH −, which leads to further reactions, eventually forming CO 2 and H 2 O [13,14].…”