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<p>While extensive efforts have been devoted to enhancing electron transfer efficiency through metal valence cycling in heterogeneous Fenton-like reactions, the potential catalytic improvement induced by dynamic structural stretching remain unexplored. Here, we introduce a homointerpenetrated Fe-based metal‒organic framework (BUC-95) featuring a dynamic stretchable structure that significantly boosts the heterogeneous Fenton-like catalytic performance. BUC-95’s unique stretchable structure achieved effective peroxydisulfate activation for degrading various micropollutants via Fe(IV) = O species, facilitated by a reduced energy barrier for Fe(IV) = O formation through modulation of the electron density at Fe sites. DFT calculations suggest that, compared with the isostructural analogue with hydrogen bond-restricted stretching, the flexible dynamic stretching in BUC-95 overcomes the inherent electron transfer limitations from Fe sites to peroxydisulfate, enhancing the ofloxacin degradation performance. Practically, BUC-95 demonstrated effective continuous-flow degradation and detoxification of micropollutants. This work establishes dynamic stretching as a crucial design principle for advancing environmental remediation materials and technologies.</p>

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Dynamic stretching beyond electron transfer in a homointerpenetrated metal‒organic framework for enhanced Fenton-like reactions

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月30日

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  • Fei Wang,
  • Yu-Hang Li,
  • Fu-Xue Wang,
  • Chong-Chen Wang,
  • Ya Gao,
  • Xiao-Hong Yi,
  • Wei-Jian Yu,
  • Peng Wang,
  • Mingyi Liu,
  • Haodong Ji,
  • Yifei Sun,
  • Wen Liu

摘要

While extensive efforts have been devoted to enhancing electron transfer efficiency through metal valence cycling in heterogeneous Fenton-like reactions, the potential catalytic improvement induced by dynamic structural stretching remain unexplored. Here, we introduce a homointerpenetrated Fe-based metal‒organic framework (BUC-95) featuring a dynamic stretchable structure that significantly boosts the heterogeneous Fenton-like catalytic performance. BUC-95’s unique stretchable structure achieved effective peroxydisulfate activation for degrading various micropollutants via Fe(IV) = O species, facilitated by a reduced energy barrier for Fe(IV) = O formation through modulation of the electron density at Fe sites. DFT calculations suggest that, compared with the isostructural analogue with hydrogen bond-restricted stretching, the flexible dynamic stretching in BUC-95 overcomes the inherent electron transfer limitations from Fe sites to peroxydisulfate, enhancing the ofloxacin degradation performance. Practically, BUC-95 demonstrated effective continuous-flow degradation and detoxification of micropollutants. This work establishes dynamic stretching as a crucial design principle for advancing environmental remediation materials and technologies.