This project aims at developing scaffolds made of silk proteins to detect pollutants in water or air. Various systems (hydrogels, foams or electrospun filters) made from silk fibroin will be prepared incorporating metallic nanoparticles. These composites will allow to strongly concentrate organic pollutants and thanks to the presence of plasmonic nanoparticles will be used to detect them in situ by Surface Exalted Raman Spectroscopy (SERS) techniques.