Simultaneous oxidation and immobilization of arsenite from water by nanosized magnetic mesoporous iron manganese bimetal oxides (Nanosized-MMIM): Synergistic effect and interface catalysis

Oxidative sorption of arsenite from water by iron: a mechanistic perspective

“…In addition to ZVI applications, oxidative sorption by binary metal oxides could be further enhanced with external dosages of H 2 O 2 . 165 Enhanced removal of As(III) with magnetic Fe-Mn binary metal oxides plus H 2 O 2 can be attributed to ˙OH radicals generated through Fenton like reactions, catalyzed by surface Fe(II) and Mn(II) species, as well as the dissolved species (eqn ( 8)). Further regeneration of Mn(II) species occurs based on the reaction given in eqn (18).…”

Purification of As(iii) through oxidation of siderite and As(iii) by dissolved oxygen: behavior and mechanism

“…Removal efficiencies of As( v ) by natural or synthesized adsorbents were normally higher than those of As( iii ), 21,22 partially due to the uncharged nature of As( iii ) at near-neutral pH. 23 Therefore, pre-oxidation of As( iii ) was an effective method in increasing As( iii ) removal. 24–26…”

“…Removal efficiencies of As(V) by natural or synthesized adsorbents were normally higher than those of As(III), 21,22 partially due to the uncharged nature of As(III) at near-neutral pH. 23 Therefore, pre-oxidation of As(III) was an effective method in increasing As(III) removal. [24][25][26] Iron oxides, including ferrihydrite, lepidocrocite, goethite, hematite, etc., are a class of efficient adsorbents for As.…”

Facile Synthesis of AgFeO2‐Decorated CaCO3 with Enhanced Catalytic Activity in Activation of Peroxymonosulfate for Efficient Degradation of Organic Pollutants

“…Advanced oxidation processes (AOPs) have been recognized as innovative approaches for the intensive decontamination of wastewater due to their generation of robust reactive oxygen species (ROS). [ 7–11 ] Recently, peroxymonosulfate (PMS)‐based AOPs have attracted tremendous research interest owing to their numerous available activation methods, wide applicability, the involvement of diverse radicals (hydroxyl radical [·OH], sulfate radicals [SO 4 · − ], superoxide radicals [O 2 · − ]) and nonradical species (singlet oxygen [ 1 O 2 ]), and the fact that PMS is easy to store and transport. [ 12 ] A variety of methods have been adopted to activate PMS, such as utilizing alkali, heat, light, ultrasound, microwave, quinones, carbon‐based catalysts, and transition metal‐based catalysts, of which transition metal‐based catalysts have proven to be the most efficient PMS activators.…”