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Published on: December 10, 2011
Defective MOF-808 functionalized with electronically tunable deep eutectic solvents as a dual-functional platform for
Ruixue Zhang1, Chen Fan1, Jie Li1
1School of Light Industry Science and Engineering, Beijing Technology and Business University, Beijing, 100048, China.
Journal of Environmental Management
|August 11, 2026
Summary
This study introduces a novel dual-functional platform using defective MOF-808 and a tunable deep eutectic solvent (DES) for efficient per- and polyfluoroalkyl substance (PFAS) pesticide analysis and removal. The new material effectively extracts and removes flufenacet, a PFAS pesticide, from complex samples with high efficiency.
Area of Science:
- Environmental Chemistry
- Materials Science
- Analytical Chemistry
Background:
- Per- and polyfluoroalkyl substances (PFAS) pesticides, like flufenacet, pose significant environmental and health risks.
- Effective strategies are needed for selective analysis and bulk removal of PFAS from complex matrices and water.
Purpose of the Study:
- To develop a dual-functional platform for simultaneous microextraction and adsorptive removal of flufenacet.
- To engineer a composite material combining defect-engineered MOF-808 with electronically tunable deep eutectic solvents (DES).
Main Methods:
- Synthesized defective MOF-808 via a hydrothermal method.
- Constructed a series of DESs with varied electronic structures using para-substituted trifluoromethoxybenzene derivatives and levulinic acid.
- Integrated MOF-808 with the optimized DES (DES-SO2NH2) into a thin-film platform.
Main Results:
- The MOF-808/DES-SO2NH2 composite exhibited a high adsorption capacity (466.22 mg/g) and >95% removal efficiency for flufenacet in real water matrices.
- Achieved a low detection limit (0.1 ng/L) and wide linear range (0.05-500 ng/mL) in complex wine and grape juice.
- Demonstrated selective flufenacet capture via synergistic hydrogen-bonding and halogen-halogen interactions, with DES shielding natural organic matter.
Conclusions:
- The developed platform offers a simple, automatable, and environmentally benign approach for PFAS pesticide monitoring and remediation.
- This work establishes a paradigm for designing DES-MOF composites for addressing broader PFAS contamination challenges.
- Presents a modular design strategy for DES-functionalized green materials applicable to various PFAS pesticides.
