Open AccessStudy of Pb Ions Removal from Aqueous Solutions by a Novel Sodium Formate-Coated Magnetite Nanoparticles
Author(s) -
H. Mustafa,
Tagreed M. AlSaadi
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1879/3/032112
Subject(s) - magnetite , crystallite , spinel , aqueous solution , crystal structure , materials science , nanoparticle , metal ions in aqueous solution , analytical chemistry (journal) , nuclear chemistry , metal , chemistry , crystallography , nanotechnology , metallurgy , chromatography
One of the problems that continuously happen from the past ages till the present time is the contamination of the water sources with heavy metal ions; as a continuation of the many studies have been done so far to solve this problem. Novel magnetite nanoparticles (NPs) coated with sodium formate (SF-Ni 0.31 Mg 0.15 Ag 0.04 Fe 2.5 O 4 )have been prepared using co-precipitation method. Characterization of the prepared SF-magnetite NPs was done by using the spectroscopic devices (XRD), (SEM), (EDX), (FT-IR), and (AAS). From the XRD spectrum it was found that the crystal structure of the prepared SF-magnetite NPs is a cubic inverse spinel structure, which has average crystallite size, the lattice constant, and X-ray density of 28.57 nm, 8.33 Å, 5.29 g/cm 3 , respectively. SEM images have shown that the prepared NPs have a sphere-like shape with a measured average crystallite size of 25.93 nm. By EDX spectrum the presence of the constituent elements was confirmed by giving their energy peaks (O: Kα=0.525), (Fe: Kα=6.4, Lα=0.705), (Ni: Kα=7.84, Lα=0.85), (Mg: Kα=1.25), and (Ag: Lα=2.98, Lβ=3.35). The attachment of the SF molecules to the magnetite NPs was proven by the FT-IR spectrum through appearing the absorption peaks in the SF-magnetite NPs spectrum at 1600cm −1 and 3400cm −1 return to the bonds (C=O) and (C-H stretch) in SF. By ASS results, adsorption of Pb ions was clearly influenced by SF coating giving removal rate (93%) at equilibrium time (10min) in the prepared solution of Pb(NO 3 ) 2 salt, while for the wastewater samples the removal rate was (55%) - (100%).