Monopersulfate oxidation of 2,4,6-tribromophenol using an iron(III)-tetrakis(p-sulfonatephenyl)porphyrin catalyst supported on an ionic liquid functionalized Fe3O4 coated with silica

Photo-, sono- and sonophotocatalytic degradation of methylene blue using Fe3O4/ZrO2 composites catalysts

“…and 1600 cm -1 is the characteristic absorption of -OH group stretching and bending vibrations, respectively [12]. The characteristic peaks of Fe3O4 at 580 cm -1 [13] could be observed in the sample 0.5Fe3O4/ZrO2, indicating the presence of magnetite Fe3O4 nanoparticles in the sample. Furthermore, the characteristic absorption peak below 500 cm -1 is attributed to the Zr-O stretching vibrations [12].…”

Catalytic oxidation of tetrabromobisphenol A by iron(III)-tetrakis(p-sulfonatephenyl)porphyrin catalyst supported on cyclodextrin polymers with potassium monopersulfate

“…HA is a major component of landfill leachates [33], and inhibits the oxidation of 2,4,6-tribromophenol, pentabromophenol and TBBPA by heterogeneous catalysts with iron(III)-porphyrins [10][11][12][13]. Fig.…”

“…To stabilize such catalysts in the presence of an oxygen donor, the iron(III)-porphyrin catalyst can be immobilized on a variety of supports [9]. For example, iron(III)-porphyrin catalysts have been immobilized on functionalized silica [10,11], metal oxides [12], mesoporous silica [13] and ion-exchange resins [14,15] for the degradation of bromophenols. In addition, such supported catalysts are usually recyclable.…”

Zirconium (IV) porphyrin graphene oxide: a new and efficient catalyst for the synthesis of 3,4‐dihydropyrimidin‐2(1H)‐ones

“…Also, supports provide a suitable surface for doing organic reactions. Various supports have been reported for immobilization of metalloporphyrins like chitosan, organosilicon, ferroferric oxide, polymeric microspheres, micro and mesoporous materials, etc…”