Sensitive and stable Ag@MOFs imprinted composite membrane for specific detection of organic dyes

A novel surface-enhanced Raman scattering (SERS)-imprinted membrane is engineered through a synergistic integration of SERS technology and molecular imprinting technology (MIT). Polyamide (PA-6) serves as the supporting membrane due to its mechanical properties and is further modified with UIO-66 (NH 2 )–Ag as SERS substrates. Molecular imprinted polymers (MIPs) are synthesized to produce the SERS imprinted membrane (Ag/PA-6/UIO-66(NH 2 )@MIPs membranes, APU-MIMs) for selective detection of rhodamine B (RhB). It is reflected from the results that APU-MIMs exhibits excellent SERS performance with high sensitivity and specific recognition ability, reaching a detection limit of 10 −12  M. The APU-MIMs also presents the advantages of non-destructiveness, good stability and recyclability. Overall, it pioneers a novel synthetic strategy for fabricating SERS membranes with superior analytical performance, thereby expanding the practical scope of SERS-based sensing technologies.