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Updated: Jun 18, 2026

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Ellagic Acid-Based MOFs with Synergistic Adsorption and ROS-Driven Photocatalysis for Water Purification.

Zheyu Zhang1,2, Wenjie Peng1, Shuju Xiong1

  • 1School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China.

Inorganic Chemistry
|June 16, 2026
PubMed
Summary

This study introduces YNU-007, a sustainable metal-organic framework (MOF) from plant waste for water purification. It effectively removes dyes and pollutants while generating reactive oxygen species for comprehensive water remediation.

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Area of Science:

  • Materials Science
  • Environmental Science
  • Chemistry

Background:

  • Ellagic acid, a natural polyphenol from agro-waste, is a cost-effective ligand for eco-friendly metal-organic frameworks (MOFs).
  • Existing water remediation methods face challenges with complex pollutant mixtures and sustainability.

Purpose of the Study:

  • To develop a highly porous and stable anionic indium-phenolate framework (YNU-007) for real-water remediation.
  • To evaluate YNU-007's efficiency in removing cationic dyes and degrading organic pollutants.

Main Methods:

  • Gram-scale synthesis of the anionic indium-phenolate framework YNU-007.
  • Adsorption studies for cationic dye removal, focusing on malachite green (MG).
  • Electron paramagnetic resonance and radical quenching to identify reactive oxygen species (ROS) generation.

Main Results:

  • YNU-007 demonstrated >99.0% adsorption removal of cationic dyes via cation-exchange.
  • Achieved a record-high uptake capacity for malachite green (MG) among reported MOFs.
  • YNU-007 generated both radical (•O2⁻) and nonradical (¹O2) ROS, enabling pollutant mineralization, cyanobacteria inhibition, and pathogen control.

Conclusions:

  • YNU-007 is a highly efficient, stable, and eco-friendly MOF for comprehensive water remediation.
  • The study establishes a new paradigm for sustainable pollutant control in complex water systems using plant-derived materials.