Quercetin-Based Magnetic Porous Organic Polymers for Efficient Adsorption of Phenolic Pollutants

Phenolic wastewater poses a significant threat to public health, highlighting the urgent need for the development of effective and efficient treatment methods. Porous organic polymers, renowned for their high structural stability, large surface area, and diverse physicochemical properties, have gained widespread application in adsorption-based technologies. Therefore, the development of novel adsorbent materials remains a crucial area of scientific research. In this study, a novel porous organic polymer adsorbent is synthesized using quercetin, derived from biomass, as the key precursor. To facilitate efficient separation and reusability, magnetic Fe₃O₄@SiO₂ magnetic nano-particle nanoparticles (MNPs) are integrated into the porous matrix. The resulting magnetic organic porous adsorbents exhibited outstanding adsorption capacity for phenolic contaminants, along with excellent recoverability and reusability. Additionally, the adsorption mechanism is systematically investigated and verified through a series of characterization techniques.