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<p>MOF-derived Z-scheme hetero-nanostructure of g-C<sub>3</sub>N<sub>4</sub>-Fe<sub>3</sub>O<sub>4</sub>/C polyhedrons was firstly demonstrated for recyclable and high-performance photocatalysts. Z-scheme g-C<sub>3</sub>N<sub>4</sub>-Fe<sub>3</sub>O<sub>4</sub>/C hetero-nanostructure polyhedrons can be facilely fabricated via using the precursor of NH<sub>2</sub>-MIL-101(Fe) (amine-functionalized metal–organic frameworks) incorporated with g-C<sub>3</sub>N<sub>4</sub> through convenient hydrothermal and calcination. Under visible light irradiation, the degradation rate of Congo red by the magnetic polyhedron-shaped g-C<sub>3</sub>N-Fe<sub>3</sub>O<sub>4</sub>/C hetero-nanostructures is approximately 1.24 times higher than that of g-C<sub>3</sub>N<sub>4</sub> and 1.19 times higher than that of Fe<sub>3</sub>O<sub>4</sub>/C samples. And superoxide radicals likely play a role of the major active species in the photocatalytic degradation of Congo red (CR), attributed to the high conductivity of graphite carbon. Consequently, a potential Z-scheme transfer mechanism of the photogenerated carrier has been devised. The design strategy as well as as-constructed Z-scheme hetero-nanostructure can pave a simple avenue for preparation and application of high-performance and recyclable photocatalyst.</p> Graphical abstract <p>The MOF-derived Z-scheme hetero-nanostructures composed of g-C<sub>3</sub>N<sub>4</sub>-Fe<sub>3</sub>O<sub>4</sub>/C polyhedrons were demonstrated for recyclable and high-performance photocatalysts. The as-designed Z-scheme hetero-nanostructures can significantly enhance visible light absorption and facilitate the separation of photogenerated charge carriers, thereby achieving excellent photocatalytic stability and nearly 1.24 and 1.19 times higher photocatalytic performance than those of g-C<sub>3</sub>N<sub>4</sub> and Fe<sub>3</sub>O<sub>4</sub>/C samples, respectively.</p> <p></p>

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Z-scheme hetero-nanostructure of g-C3N4-Fe3O4/C polyhedrons for recyclable and high-performance photocatalysts

  • 期刊论文

  • 发表日期：

    2025年5月22日

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  • Xu jiaqi,
  • Yu Xie,
  • Yangang Sun

摘要

MOF-derived Z-scheme hetero-nanostructure of g-C3N4-Fe3O4/C polyhedrons was firstly demonstrated for recyclable and high-performance photocatalysts. Z-scheme g-C3N4-Fe3O4/C hetero-nanostructure polyhedrons can be facilely fabricated via using the precursor of NH2-MIL-101(Fe) (amine-functionalized metal–organic frameworks) incorporated with g-C3N4 through convenient hydrothermal and calcination. Under visible light irradiation, the degradation rate of Congo red by the magnetic polyhedron-shaped g-C3N-Fe3O4/C hetero-nanostructures is approximately 1.24 times higher than that of g-C3N4 and 1.19 times higher than that of Fe3O4/C samples. And superoxide radicals likely play a role of the major active species in the photocatalytic degradation of Congo red (CR), attributed to the high conductivity of graphite carbon. Consequently, a potential Z-scheme transfer mechanism of the photogenerated carrier has been devised. The design strategy as well as as-constructed Z-scheme hetero-nanostructure can pave a simple avenue for preparation and application of high-performance and recyclable photocatalyst.

Graphical abstract

The MOF-derived Z-scheme hetero-nanostructures composed of g-C3N4-Fe3O4/C polyhedrons were demonstrated for recyclable and high-performance photocatalysts. The as-designed Z-scheme hetero-nanostructures can significantly enhance visible light absorption and facilitate the separation of photogenerated charge carriers, thereby achieving excellent photocatalytic stability and nearly 1.24 and 1.19 times higher photocatalytic performance than those of g-C3N4 and Fe3O4/C samples, respectively.