A novel two-dimensional
α-Fe
2
O
3
/sulfur-doped
polyimide (FO/SPI) direct Z-scheme photocatalyst was successfully
constructed by a facile thermal treatment method. The effects of α-Fe
2
O
3
nanosheets on the morphology, chemical structure,
and photoelectronic properties of FO/SPI composites were systematically
characterized by different spectroscopic means. These methods include
X-ray diffraction, scanning electron microscopy, X-ray photoelectron
spectroscopy, transient fluorescence spectra, and so forth. It was
confirmed that the small amounts of α-Fe
2
O
3
can availably facilitate exfoliation of bulk SPI, resulting in a
transformation of SPI from bulk to 2D layered composite that illustrates
tight interface through the coordination Fe–N bond and an all-solid-state
direct Z-scheme junction. Thus, the transfer and separation efficiency
of photogenerated electron/hole pairs were significantly enhanced,
which greatly promoted improvement of the photocatalytic activity
of the FO/SPI composite for methyl orange degradation under solar
light. This work provides a new approach to constructing efficient
inorganic–organic Z-scheme photocatalyst based on strong interface
interaction.
A family of unique 2D layered Cu-based coordination polymers (abbreviated as HNNU-1α,HNNU-1β and HNNU-1γ) with different halide anions were successfully constructed using a zwitterion pyridiniumolate as the structural inductive agent....
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