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<p>A new nano-photocatalyst (MIL-101-DIST/g-C<sub>3</sub>N<sub>4</sub>/Ni) was designed to combine the unique properties of a modified metal–organic framework (a crystalline porous semiconductor with large surface area and tunable properties), g-C<sub>3</sub>N<sub>4</sub> (a polymeric semiconductor with excellent photocatalytic properties), and nickel nanoparticles (which can enhance catalytic activity and facilitate charge transfer). Synthesis of MIL-101-DIST/g-C<sub>3</sub>N<sub>4</sub>/Ni was successfully performed and the structure, morphology and optical properties of the nanocomposite were confirmed by diverse methods such as FT-IR, PXRD, XPS, FESEM, TEM, TGA, ICP, EDX, elemental mapping, UV–vis DRS, BET, Mott–Schottky, EIS and PL. It was found by UV–vis DRS that MIL-101-DIST/g-C<sub>3</sub>N<sub>4</sub>/Ni has greater photo-absorption characteristic compared with its precursors. The synergistic interaction between the composite components creates a highly efficient photocatalytic activity for nitrobenzene photo-reduction by in-situ hydrogen generation from water splitting at room temperature under sunlight irradiation via a Z-scheme charge transfer pathway. By this eco-friendly method, various nitrobenzenes were selectively reduced to their corresponding anilines in high yields.</p>

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MIL-101-DIST/g-C3N4/Ni a new nano-photocatalyst for nitrobenzene photo-reduction via in-situ hydrogen generation from water splitting

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  • 发表日期：

    2025年11月5日

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  • Sara Sobhani,
  • Bita Mohamadi,
  • José Miguel Sansano

摘要

A new nano-photocatalyst (MIL-101-DIST/g-C3N4/Ni) was designed to combine the unique properties of a modified metal–organic framework (a crystalline porous semiconductor with large surface area and tunable properties), g-C3N4 (a polymeric semiconductor with excellent photocatalytic properties), and nickel nanoparticles (which can enhance catalytic activity and facilitate charge transfer). Synthesis of MIL-101-DIST/g-C3N4/Ni was successfully performed and the structure, morphology and optical properties of the nanocomposite were confirmed by diverse methods such as FT-IR, PXRD, XPS, FESEM, TEM, TGA, ICP, EDX, elemental mapping, UV–vis DRS, BET, Mott–Schottky, EIS and PL. It was found by UV–vis DRS that MIL-101-DIST/g-C3N4/Ni has greater photo-absorption characteristic compared with its precursors. The synergistic interaction between the composite components creates a highly efficient photocatalytic activity for nitrobenzene photo-reduction by in-situ hydrogen generation from water splitting at room temperature under sunlight irradiation via a Z-scheme charge transfer pathway. By this eco-friendly method, various nitrobenzenes were selectively reduced to their corresponding anilines in high yields.