数字农科院2.0

Fluorine-functionalized metal-organic framework-based substrate for rapid and targeted detection of short-chain perfluoroalkyl substances in environmental waters by surface-enhanced Raman scattering

文献类型： 外文期刊

作者： Yishu Luo;Jie Huang;Qianmin Dong;Huaping Gong;Guicen Ma;Pei Liang

作者机构：

关键词： MOFs;PFAS;Rapid detection;SERS;UiO-66-F4@Au

期刊名称： Journal of Environmental Chemical Engineering

ISSN： 2213-2929

年卷期： 2026 年 14 卷 2 期

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： The pervasive occurrence of short-chain per- and polyfluoroalkyl substances (PFAS), such as potassium perfluorobutane sulfonate (PFBS-K), in aquatic environments poses severe health risks. However, tracing these contaminants at low levels remains difficult because targeted and reliable sensing platforms are lacking in complex mixtures. While surface-enhanced Raman scattering (SERS) allows rapid and sensitive detection, its practicality is hindered by poor analyte affinity and irreproducible signal generation. Here, we report a general design strategy that integrates molecularly targeted enrichment with plasmonic enhancement by creating a biomimetic SERS substrate. We engineered a fluorine-functionalized metal-organic framework (UiO-66-F₄) that mimics PFAS's fluorinated structure, endowing it with exceptional affinity and capacity for PFBS-K, as verified by UPLC-MS/MS. After in-situ incorporation of Au nanoparticles, the resulting UiO-66-F₄@Au substrate achieves unprecedented SERS performance for PFAS detection, featuring high reproducibility (RSD = 5.29 %) and remarkable sensitivity, with a low detection limit of 0.926 × 10⁻⁷ M for PFBS-K in real lake water. This work presents a practical sensor for environmental monitoring and establishes a flexible, target-oriented design paradigm for developing advanced optical platforms to precisely detect trace pollutants in complex environments.

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