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September 8, 2026PolymersOpen Access

LPE-Grown Lanthanide-MOF/Cellulose Paper for Visual Sensing and Selective Dye Removal

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Authors

XHXiang HOUYZYipan ZengYZYuhang Zhang

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Overview

Materials study demonstrates stable lanthanide-MOF growth on cellulose paper for spore detection and dye removal, highlighting potential for portable environmental monitoring.

Key Points

  • To develop a binder-free liquid-phase epitaxy strategy for coating cellulose fibers directly with lanthanide metal–organic frameworks for optical biomarker sensing and wastewater purification.
  • Grew lanthanide metal–organic framework (Ln-MOF) coatings directly onto unmodified cellulose fibers via binder-free liquid-phase epitaxy (LPE).
  • Adjusted Eu3+/Tb3+ ratios to produce dual-emission luminescence for smartphone-assisted ratiometric visual detection of dipicolinic acid (DPA).
  • Assessed composite fluorescence stability across pH 3–11 and evaluated the charge-selective adsorption and reusability for cationic dye removal over four cycles.
  • The Ln-MOF/cellulose paper exhibited uniform luminescence with relative standard deviations below 2% and maintained stable fluorescence from pH 3 to 11.
  • Dual-emitting composite paper enabled smartphone-based ratiometric detection of dipicolinic acid across a linear range of 0–2000 μM with a detection limit of 10 μM.
  • Anionic Ln-MOF coatings selectively adsorbed cationic dye pollutants while retaining structural integrity and performance through four regeneration cycles.

Cite This Study

HOU et al. (2026) studied this question.

synapsesocial.com/papers/6aa0091858e84d0ff5b47c8ahttps://doi.org/10.3390/polym18172178
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