A Self‐Assembly MOF‐on‐MOF Heterostructure‐Driven Fluorescence Sensor for Aerogel‐Based Visualization Detection of Flavomycin

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-MIL-101(Eu) and Fe-MOF improves the sensitivity and accuracy of detection, which has a 4.8 nm detection limit, enabling the high sensitivity detection of Fla. Likewise, we put together a handheld sensing platform incorporating aerogel and sensing materials that can meet the expectations of real-time monitoring and multiple actual sample detection, and fluorescent MOFs materials offer an innovative viewpoint on the application of creating flexible sensors, enabling a new method of visualization for food safety and environmental early alerting.