Magnetic Nanoparticles as Effective Heavy Ion Adsorbers in Natural Samples

Abstract

This paper refers to research based on tests completed on the adsorption of heavy metal ions (Pb2+, Cu2+, Cd2+) from selected natural liquid samples such as apple, tomato, and potato juices using surface-functionalized Mn ferrite nanoparticles (Mn0.2Fe2.8O4). To determine the most efficient adsorption conditions of these heavy metals, the nanoparticles’ surfaces were modified with five different ligands (phthalic anhydride, succinic anhydride, acetic anhydride, 3-phosphonopropionic acid, and 16-phosphonohexadecanoic acid). To evaluate the success of the adsorption process, the resultant liquid samples were examined for the amount of residuals using the flame atomic absorption spectroscopy method. The Mn ferrite particles selected for these tests were first characterized physicochemically by the following methods: transmission electron microscopy, scanning electron microscopy, X-ray diffraction, IR spectroscopy, Mössbauer spectroscopy.

Microstructure, ion adsorption and magnetic behavior of mesoporous γ-Fe2O3 ferrite nanoparticles

“…No organ of a child's body is immune to the effects of lead poisoning. [60][61][62] In the present research, synthesized mesoporous g-Fe 2 O 3 nanoparticles were used to remove Pb 2+ from an aqueous solution.…”

Removal of Cr(III) Ions from Water Using Magnetically Separable Graphene-Oxide-Decorated Nickel Ferrite Nanoparticles

“…Mn 0.2 Fe 2.8 O 4 NPs functionalized with different ligands (phthalic anhydride, succinic anhydride, acetic anhydride, 3-phosphonopropionic acid, and 16-phosphonohexadecanoic acid) have been used for simultaneous removal of Pb 2+ , Cd 2+ , and Cu 2+ ions from apple (pH = 2.07), tomato (pH = 4.98), and potato juices (pH = 6.20). 24 It was found that the pH of the liquid samples and the ligand used affect the adsorption capacity of the NPs considerably. However, the nickel ferrite (NiFe 2 O 4 ) nanoparticles or their carbonaceous composites, which possess considerable ferrimagnetic behavior and hence can be easily separated from aqueous solutions magnetically, have not been evaluated as adsorbent materials for the removal of Cr(III) ions from water.…”

“…The nanocomposite could adsorb Pb 2+ ions from water with an adsorption capacity as high as 602.4 mg g –1 . Mn 0.2 Fe 2.8 O 4 NPs functionalized with different ligands (phthalic anhydride, succinic anhydride, acetic anhydride, 3-phosphonopropionic acid, and 16-phosphonohexadecanoic acid) have been used for simultaneous removal of Pb 2+ , Cd 2+ , and Cu 2+ ions from apple (pH = 2.07), tomato (pH = 4.98), and potato juices (pH = 6.20) . It was found that the pH of the liquid samples and the ligand used affect the adsorption capacity of the NPs considerably.…”