The wide use of noxious and non-degradable metals due to industrialization has become a major factor in rising health concerns. Diseases associated may involve cardiovascular disorders, brain damage, cancer, etc., and this leads to the development of certain methods for the sole purpose of cleaning water, soil, air, etc., to remove metals categorized as toxic ones. Ionic liquids with remarkable thermal stability, association ability, exhibiting low vapour emission, etc., are considered eco-friendly for the decontamination of toxic metal impurities. These ionic liquids involve certain modes of interactions like an electrostatic, dipole, van der Waals, etc., for the effective separation and extraction of metals. Also, the property of reusability associated with ionic liquids makes them be used on a wide scale.