Multi-functional Eu-MOF molecularly imprinted membrane for filtration-enhanced simultaneous adsorption and detection of ribavirin

Abstract

Ribavirin (RBV) in food and environmental samples presents significant risks to human health, necessitating the development of methods capable of its simultaneous detection and adsorption. This study describes the preparation of a multi-functional molecularly imprinted material (Nylon@Eu-MOF@MIPs), achieved through in-situ growth of Eu-MOF with fluorescence properties on a nylon membrane, designed for the concurrent adsorption and detection of RBV. The material demonstrates high adsorption capacity for RBV (41.36 mg g⁻¹), a pronounced imprinting effect (imprinting factor of 3.06), and substantial sensitivity (detection limit of 0.01 μM). Furthermore, following ten adsorption–desorption cycles, Nylon@Eu-MOF@MIPs retain effective adsorption capacity, with a minimal loss of 5.8 %. Additionally, a filtration-enhanced adsorption and detection mode is proposed, achieving a 1.63-fold increase in adsorption capacity compared to the traditional soaking method. The integrated platform developed in this study facilitates efficient adsorption and visual detection of RBV. This research not only advances membrane separation materials but also establishes foundational conditions for creating integrated systems for simultaneous adsorption and visual detection.