Metal ferrites nanoparticles for catalytic and photocatalytic ozonation in wastewater treatment: a review

Integrated Ozonation Ni-NiO/Carbon/g-C3N4 Nanocomposite-Mediated Catalytic Decomposition of Organic Contaminants in Wastewater under Visible Light

“…At the same time, another CR and ARS removal mechanism was proposed, and the indirect reaction is the decomposition of ozone to produce • OH radicals that are non-selective and extremely reactive with CR and ARS [ 63 ]. Both ozone and • OH radicals were involved as strong chemical oxidants for the mineralization of CR and ARS from the solution [ 64 ].…”

“…Since the redox potential of oxygen and oxygen peroxide in the reaction medium is higher than the CB potential of the Ni-NiO/C/g-C 3 N 4 , electrons move to the oxygen in the reaction medium. They are abundantly transformed into oxygen [ 64 ]. The use of photo-generated carriers and the formation of reactive oxygen species (ROS) will impact the photocatalytic system [ 49 ].…”

Superwetting Ag@Cu2O anchored copper mesh for efficient oil/water separation and visible-light driven removal of organic pollutants

“…8 Photocatalysis abatement of organic contaminants under ultraviolet light or visible light irradiation was extensively investigated in wastewater treatment. 9 However, oil contaminants are sometimes more reactive to oxidant species (hydroxyl radicals, for example) and reduce the removal efficiency of organic pollutants, especially for the emerging recalcitrant organic pollutants. Therefore, the physical separation of oils coupled with the simultaneous chemical degradation of organic pollutants is regarded as an effective strategy for purifying oily wastewater.…”