Magnetic Nanomaterials in Dye-Contaminated Water Remediation: Recent Advances and Future Prospects

This review provides a comprehensive analysis of recent advancements in magnetic nanomaterials for dye-contaminated water remediation. The study explores various synthesis methods for magnetic nanoparticles (MNPs), including co-precipitation, thermal decomposition, sol-gel, hydrothermal, and biological approaches. It examines the efficacy of MNPs and their composites in removing diverse dyes from aqueous solutions, highlighting their high adsorption capacities and magnetic separability. The review discusses the development of novel magnetic nanocomposites, such as iron oxide-based materials functionalized with polymers, carbon-based materials, and other functional materials, which demonstrate enhanced performance in dye removal. Adsorption mechanisms, kinetics, and isotherms are analysed, providing insights into the factors influencing dye removal efficiency. The study also addresses the limitations of MNPs, including stability issues, potential toxicity, and challenges in large-scale synthesis. Future research directions are proposed, emphasizing the need for developing more stable, environmentally friendly, and cost-effective magnetic nanomaterials for sustainable water treatment solutions. This comprehensive review contributes to the growing body of knowledge on advanced materials for environmental remediation and highlights the potential of magnetic nanomaterials in addressing global water pollution challenges.