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<p>This research successfully synthesized AgZn/g-C<sub>3</sub>N<sub>4</sub> (AgZn/CN) bimetallic composite photocatalysts through a chemical reduction approach. The findings demonstrated that incorporating AgZn bimetal optimized the interfacial electronic structure and improved the exposure efficiency of active sites while efficiently inhibiting the recombination of photoinduced charge carriers. In particular, the 4% AgZn/CN sample exhibits excellent hydrogen production performance with a hydrogen production rate of 2013.07&#xa0;μmol&#xa0;g<sup>−1</sup>&#xa0;h<sup>−1</sup>, which is a 62.8 fold enhancement over that of pure g-C<sub>3</sub>N<sub>4</sub> (CN). This finding confirms that the synergistic interaction of AgZn bimetallic with CN can significantly enhance the photocatalytic hydrogen production activity. The AgZn/CN composite system has a more optimized free energy of hydrogen adsorption (ΔG<sub>H*</sub>) as calculated by density functional theory, which provides a theoretical basis for its excellent photocatalytic performance. This study not only demonstrated the promising application of bimetallic co-catalysts in photocatalysis, but also provided new ideas for the design of high-performance co-catalysts.</p>

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Bimetallic AgZn co-catalyst modified g-C3N4 nanosheets for highly efficient photocatalytic hydrogen evolution

  • 期刊论文

  • 发表日期：

    2026年7月25日

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  • Li-Juan Sun,
  • Yu-Long Xie

摘要

This research successfully synthesized AgZn/g-C3N4 (AgZn/CN) bimetallic composite photocatalysts through a chemical reduction approach. The findings demonstrated that incorporating AgZn bimetal optimized the interfacial electronic structure and improved the exposure efficiency of active sites while efficiently inhibiting the recombination of photoinduced charge carriers. In particular, the 4% AgZn/CN sample exhibits excellent hydrogen production performance with a hydrogen production rate of 2013.07 μmol g−1 h−1, which is a 62.8 fold enhancement over that of pure g-C3N4 (CN). This finding confirms that the synergistic interaction of AgZn bimetallic with CN can significantly enhance the photocatalytic hydrogen production activity. The AgZn/CN composite system has a more optimized free energy of hydrogen adsorption (ΔGH*) as calculated by density functional theory, which provides a theoretical basis for its excellent photocatalytic performance. This study not only demonstrated the promising application of bimetallic co-catalysts in photocatalysis, but also provided new ideas for the design of high-performance co-catalysts.