• cofe2o4/tio2 nanocatalysts for the photocatalytic degradation of reactive red 120 in aqueous solutions in the presence and absence of electron acceptors

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    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 601
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     magnetic cofe2o4 and cofe2o4/tio2 nanocatalysts were prepared by a co-precipitation method in which cofe2o4 induced the formation of thermodynamically more stable rutile phase of tio2. the structural and elemental analyses confirmed the formation of cofe2o4 and cofe2o4/tio2 nanocatalysts and the specific atomic ratios of ti, co, fe, and o in these catalysts. the presence of co2+ and fe3+ cations in its oxide forms on the surface of tio2 led to visible light absorption in the wavelength range 550–650 nm. the band gap calculated by tauc approach showed ∼3.2, 1.1 and 2.8 ev for tio2, cofe2o4 and cofe2o4/tio2 nanocatalysts, respectively. the photocatalytic degradation of reactive red 120 (rr120) was studied by varying its concentration and the amount of nanocatalyst in order to attain a maximum degradation. the role of electron acceptors in the photocatalytic degradation of rr120 was studied in the presence of the magnetic nanocatalysts.

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