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<p>In this work, a novel S-scheme BiVO<sub>4</sub>/Cu-MOF heterojunction photocatalyst was fabricated using a simple hydrothermal approach, with BiVO<sub>4</sub> nanoparticles decorating the surface of Cu-MOF octahedra. The optimal BiVO<sub>4</sub>/Cu-MOF-2 composite (with a Cu: Bi molar ratio of 2:1) demonstrated superior photocatalytic performance, achieving CO production rates 9.20-fold and 2.49-fold enhancements relative to pristine BiVO<sub>4</sub> and Cu-MOF, respectively. Similarly, its rate constant for methylene blue (MB) degradation was 1.43-fold and 3.09-fold improvements over BiVO<sub>4</sub> and Cu-MOF, respectively. This significant enhancement arises from the S-scheme charge transfer pathway, which effectively separates photogenerated electron-hole pairs and suppresses their recombination. The work underscores the great potential of this composite in environmental remediation applications such as carbon recycling and wastewater treatment, offering significant potential for advancing sustainable environmental solutions.</p>

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Construction of S-Scheme BiVO4/Cu-MOF Heterojunction Photocatalyst for Efficient Methylene Blue Degradation and CO2 Reduction

  • 期刊论文

  • 发表日期：

    2026年5月19日

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  • Yunyun Gong,
  • Wenmiao Zhu,
  • Qinying Li,
  • Meichao Gao

摘要

In this work, a novel S-scheme BiVO4/Cu-MOF heterojunction photocatalyst was fabricated using a simple hydrothermal approach, with BiVO4 nanoparticles decorating the surface of Cu-MOF octahedra. The optimal BiVO4/Cu-MOF-2 composite (with a Cu: Bi molar ratio of 2:1) demonstrated superior photocatalytic performance, achieving CO production rates 9.20-fold and 2.49-fold enhancements relative to pristine BiVO4 and Cu-MOF, respectively. Similarly, its rate constant for methylene blue (MB) degradation was 1.43-fold and 3.09-fold improvements over BiVO4 and Cu-MOF, respectively. This significant enhancement arises from the S-scheme charge transfer pathway, which effectively separates photogenerated electron-hole pairs and suppresses their recombination. The work underscores the great potential of this composite in environmental remediation applications such as carbon recycling and wastewater treatment, offering significant potential for advancing sustainable environmental solutions.