Constructing halogen-functionalization magnetic covalent organic frameworks for enhancing the endocrine disruptors
Haijuan Jiang1, Han Tao1, Shaoxiang Yang1
1Beijing Key laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, PR China.
Food Chemistry
|June 5, 2025
Summary
Magnetic covalent organic frameworks (COFs) enriched with halogen atoms effectively remove endocrine disruptors (EDCs) from environmental and food samples. Bromine-functionalized COFs show high adsorption capacity and practical application for EDC removal.
Area of Science:
- Materials Science
- Environmental Chemistry
- Analytical Chemistry
Background:
- Endocrine disruptors (EDCs) pose significant risks to environmental and human health.
- Developing efficient adsorbents for EDC detection and removal is crucial.
- Magnetic covalent organic frameworks (COFs) offer tunable properties for adsorption applications.
Purpose of the Study:
- To design and synthesize halogen-functionalized magnetic COFs for enhanced EDC adsorption.
- To investigate the adsorption capacity and mechanism of these novel COFs.
- To evaluate the practical applicability of the developed adsorbents for EDC removal from real-world samples.
Main Methods:
- Synthesis of a series of halogen-functionalized magnetic COFs.
- Characterization of adsorbent properties.
- Adsorption experiments to determine EDC adsorption capacity.
- Density Functional Theory (DFT) calculations to elucidate adsorption mechanisms.
- Application testing in environmental and food matrices (water, milk, vinegar).
Main Results:
- Introduction of bromine atoms significantly enhanced EDC adsorption capacity (up to 380 mg g⁻¹).
- Fe₃O₄@COF@Br exhibited the highest adsorption energy (-158.3 kcal mol⁻¹), confirmed by DFT.
- Experimental and theoretical results showed good consistency.
- High recovery rates (83.7-100.9%) and low relative standard deviations (RSDs < 6.3%) were achieved in practical sample analysis.
Conclusions:
- Halogen-enriched magnetic COFs are effective adsorbents for EDCs.
- Bromine functionalization is a promising strategy to boost adsorption performance.
- The developed Fe₃O₄@COF@Br adsorbent demonstrates practical utility for EDC removal from diverse samples.
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