Metal organic framework
(MOF)-supported Fe catalysts belong to
an important class of catalysts used for the advanced oxidation of
organic pollutants in water. The successful preparation of the Fe/MIL-100(Cr)
and Fe/MIL-101(Cr) catalysts in this work reinforced that a recently
established carrier-gas free vapor deposition method can be a general
one for preparing Fe/MOF catalysts. The Fe loading was in the range
of 7.8–27.2 wt % on Fe/MIL-101(Cr) at a deposition temperature
of 110–150 °C, and it was only 4.35 wt % on Fe/MIL-100(Cr)
at 110 °C in comparison. The results obtained from the characterization
using the N2-isotherm and EDX mapping showed that the Fe
components resided uniformly within the pore of the MOF supports.
Both of Fe/MIL-100(Cr) and Fe/MIL-101(Cr) were rather effective for
the catalytic removal of aniline from water with Fenton oxidation.
Fe/MIL-100(Cr) can effectively remove the total organic carbon (TOC)
of the aniline solutions, while Fe/MIL-101(Cr) had a lower TOC removal
efficiency. Both of the Fe/MIL-100(Cr) and Fe/MIL-101(Cr) catalysts
showed good stability in the crystalline form compared to the previously
prepared Fe/UiO-66 catalyst, implicating that they can be potentially
more useful than Fe/UiO-66 for treating organic pollutants in water.
An AC supported Pt–Cu catalyst prepared with a new methanal reduction method was found to be quite effective for catalytic Fenton oxidation of aniline in water. The Pt and Cu components showed a synergic effect for the catalytic process.
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