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<p>The development of high-performance visible-light photocatalysts is pivotal for advancing environmental remediation. While metal-organic frameworks (MOFs) show great promise as precursors, their photocatalytic efficiency hinges on precise pyrolysis control. This study presents a novel bismuth-doped photocatalyst (Bi@Cu-MOF-N500), fabricated through in-situ bismuth incorporation and subsequent calcination under a nitrogen atmosphere. This critical step successfully transforms the precursor into a CuO/Bi<sub>2</sub>O<sub>3</sub> composite while uniquely preserving its porous architecture and surface hydroxyl groups. The resulting material exhibits a narrow band gap of 1.76&#xa0;eV and demonstrates exceptional photocatalytic activity, achieving a 96.80% degradation rate of gentian violet (GV), which significantly outperforms its air-calcined counterpart. Mechanistic investigations reveal that the unique microstructure facilitates efficient charge carrier separation and migration, with hydroxyl radicals (·OH) being the dominant active species. This work highlights the profound impact of the calcination atmosphere on MOF-derived materials and offers a valuable strategy for designing advanced photocatalysts for wastewater treatment.</p> Graphical Abstract <p></p>

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Bismuth-based Photocatalyst Derived From Copper-organic Framework for Enhancing Photocatalytic Degradation of Organic Pollutant

  • 期刊论文

  • 发表日期：

    2026年1月19日

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  • Wen-Ze Li,
  • Mei-Yan Ren,
  • Yi-Tong Hao,
  • Wen-Long Duan,
  • Jian Luan

摘要

The development of high-performance visible-light photocatalysts is pivotal for advancing environmental remediation. While metal-organic frameworks (MOFs) show great promise as precursors, their photocatalytic efficiency hinges on precise pyrolysis control. This study presents a novel bismuth-doped photocatalyst (Bi@Cu-MOF-N500), fabricated through in-situ bismuth incorporation and subsequent calcination under a nitrogen atmosphere. This critical step successfully transforms the precursor into a CuO/Bi2O3 composite while uniquely preserving its porous architecture and surface hydroxyl groups. The resulting material exhibits a narrow band gap of 1.76 eV and demonstrates exceptional photocatalytic activity, achieving a 96.80% degradation rate of gentian violet (GV), which significantly outperforms its air-calcined counterpart. Mechanistic investigations reveal that the unique microstructure facilitates efficient charge carrier separation and migration, with hydroxyl radicals (·OH) being the dominant active species. This work highlights the profound impact of the calcination atmosphere on MOF-derived materials and offers a valuable strategy for designing advanced photocatalysts for wastewater treatment.

Graphical Abstract