Polarization and magnetic aggregation enhanced SERS recognition of nitrite in water by Ag/PEI/α-Fe2O3 porous nanorods.
How to improve surface-enhanced Raman scattering (SERS) performance for the detection of ultra-low concentration pollutants in water remains a critical research topic. Nitrite ions (NO2-), widely present and utilized in daily life, can readily enter aquatic environments. Once adsorbed onto organic matter, they pose ser...