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Abstract
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In attempt to develop an efficient photocatalyst, TiO2 particles were doped with iron to give Fe–TiO2 particles
with lower band-gap energy (2.25 eV). The resultant particles were then incorporated in Cu-based metal-organic
framework with high specific surface area (1151 m2g-1) via in-situ approach to furnish a photocatalytic nanocomposite,
which was comprehensively characterized via FTIR, XRD, BET, XPS, SEM/EDS, TEM and DRS. The
results underlined that metal-organic framework was successfully formed in the presence of Fe–TiO2 particles
and the particles were located on the surface and within the pores of metal-organic framework. Moreover, the
band-gap energy of the composite was measured as 2.60 eV. The photocatalytic activity of the as-prepared
photocatalyst was assessed for degradation of Congo red dye under UV light irradiation and the effects of
influential parameters, such as dye initial concentration and catalyst loading were investigated. The results
confirmed high photocatalytic activity of the composite (89 % degradation yield), which was superior compared
to that of its components, confirming the synergistic effects. Furthermore, the composite was recyclable and
could be recovered and reused for six successive runs with slight loss of activity and leaching of Fe–TiO2 (1 wt%).
Kinetic studies also indicated that photodegradation proceeded via a second-order model.
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