Study of photocatalytic application of nano mixed metal oxides Ca0.01Fe2.99O4/CaTiO3 functionalized by porphyrin

The problem of water pollution and finding appropriate solutions to reduce them take a large part of the researches which was done to purify it, it turn, reduce the effects of188damage on the other environments (atmosphere and soil). In this study, a novel mixed metal oxide contains calcium doped-magnetite (Ca0.01Fe2.99O4) and calcium titanate (CaTiO3) with different ratios (1:1, 1:2, 1:4 and 1:6) were synthesized via solovothermal method, which can be used new photocatalysts for degradation of methylene blue (MB). The molar ratio of 1:6 showed the best photocatalytic activity for degradation of MB. Therefore, mixed metal oxide synthesized with this molar ratio was functionalized by porphyrin to increase light absorption in visible region. Then the photocatalytic activity of TCPP@ Ca0.01Fe2.99O4/CaTiO3 was investigated by photodegradation of MB under visible light irradiation in various concentrations and contact times. Light absorption rate increased in the visible region by consolidation of porphyrin on surface of TCPP@Ca0.01Fe2.99O4/CaTiO3, which lead to increase in photocatalytic activity. All synthesized materials were characterized by using XRD, FESEM, VSM, FT-IR, DRS, EDS-mapping and TEM techniques. More significantly, the mixed metal oxides functionalized by porphyrin exhibited superparaferromagnetic property that is useful for efficient magnetic separation after 25-30 seconds[1-3].