Multivalent metal catalysts in Fenton/Fenton-like oxidation system: A critical review

Single-Atom-Based Oxygen Reduction Reaction Catalysts for Proton Exchange Membrane Fuel Cells: Progress and Perspective

“…or directly introducing foreign robust metals into the SACs are both effective approaches for alleviating the influence of H 2 O 2 and ROS. This is primarily attributed to the weak catalytic performance of these leached metal ions in Fenton/Fenton-like reactions, decreasing the generation of reactive free radicals and preventing the degradation of the SAC. , In a typical example, Xie et al. reported that Co SACs with porphyrin-like CoN 4 C 10 sites densely planted into the porous carbon support (Figure d), which formed via hydrolysis of CoN 4 complexes into the ZIF-8 micropores combined with a two-step encapsulation and ligand-exchange strategy .…”

Transition metal catalysts in the heterogeneous electro-Fenton process for organic wastewater treatment: a review

“…However, as Cu + is easily oxidized by oxygen, the reaction of Cu + with H 2 O 2 is severely limited. 68 Thus copper requires more H 2 O 2 than iron to compensate for this competitive consumption, which increases the process cost and affects its large-scale application. Apart from a single Cu-induced Fenton reaction, a recent study demonstrated that Cu embedded in a nitrogen-doped carbon layer (Cu/N–C) could serve as an all-in-one catalyst for producing H 2 O 2 and ˙OH simultaneously.…”

Degradation of herbicide atrazine in water by high voltage electrical discharge in comparison with Fenton oxidation and ultrasound treatments

“…12 The degradation of residual atrazine is thus becoming an urgent issue for environmental protection, especially for water security which is listed as a priority by the “European Green Deal” proposed by the European Commission. The degradation of chemically stable atrazine is challenging, and common water treatment technologies are limited by trace organic concentrations 13 and strict fouling control, 14 so there have been increasing efforts to develop efficient advanced oxidation processes, 3 such as Fenton/Fenton-like oxidation, 15–17 ultrasound 18–20 and so on. Among them, high voltage electrical discharge (HVED) has attracted more attention because of its advantages, high degradation efficiency and environmental friendliness.…”