1 research outputs found
Preparation of MIL-53(Fe)-Reduced Graphene Oxide Nanocomposites by a Simple Self-Assembly Strategy for Increasing Interfacial Contact: Efficient Visible-Light Photocatalysts
In this work, MIL-53Â(Fe)-reduced
graphene oxide (M53-RGO) nanocomposites have been successfully fabricated
by a facile and efficient electrostatic self-assembly strategy for
improving the interfacial contact between RGO and the MIL-53Â(Fe).
Compared with D-M53-RGO (direct synthesis of MIL-53Â(Fe)-reduced graphene
oxide nanocomposites via one-pot solvothermal approach), M53-RGO nanocomposites
exhibit improved photocatalytic activity compared with the D-M53-RGO
under identical experimental conditions. After 80 min of visible light
illumination (λ ≥ 420 nm), the reduction ratio of CrÂ(VI)
is rapidly increased to 100%, which is also higher than that of reference
sample (N-doped TiO<sub>2</sub>). More significantly, the M53-RGO
nanocomposites are proven to perform as bifunctional photocatalysts
with considerable activity in the mixed systems (CrÂ(VI)/dyes) under
visible light, which made it a potential candidate for industrial
wastewater treatment. Combining with photoelectrochemical analyses,
it could be revealed that the introduction of RGO would minimize the
recombination of photogenerated electron–hole pairs. Additionally,
the effective interfacial contact between MIL-53Â(Fe) and RGO surface
would further accelerate the transfer of photogenerated electrons,
leading to the enhancement of photocatalytic activity of M53-RGO toward
photocatalytic reactions. Finally, a possible photocatalytic reaction
mechanism is also investigated in detail