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Synthesis, crystal structure and magnetic properties of a new tri‐nuclear iron (II, III) complex, a precursor for the preparation of superparamagnetic Fe 3 O 4 nanoparticles applicable in the removal of Cd 2+
Author(s) -
Razmara Zohreh,
Saheli Sania,
Eigner Vaclav,
Dusek Michal
Publication year - 2019
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.4880
Subject(s) - chemistry , superparamagnetism , triclinic crystal system , powder diffraction , infrared spectroscopy , nanoparticle , adsorption , fourier transform infrared spectroscopy , scanning electron microscope , crystal structure , crystallography , magnetic nanoparticles , nuclear chemistry , thermal analysis , analytical chemistry (journal) , chemical engineering , nanotechnology , materials science , magnetization , organic chemistry , thermal , physics , quantum mechanics , magnetic field , engineering , composite material , meteorology
This study reports the structural and spectroscopic characterization of a novel metal organic compound formulated as [Fe (bpy) 3 ] [Fe (dipic) 2 ] 2 .7H 2 O ( 1 ) (dipic = pyridine‐2,6‐dicarboxylate and bpy = 2,2 ′ ‐bipyridine). 1 was investigated by elemental analysis, FT‐IR spectroscopy, powder X‐ray diffraction and single crystal X‐ray diffraction (SC‐XRD), which revealed a triclinic structure of expected composition. Thermal degradation of 1 was also investigated. Complex 1 was used as a precursor to prepare superparamagnetic nanoparticles of Fe 3 O 4 by thermal analysis. The obtained Fe 3 O 4 was characterized by Fourier transformed infrared spectroscopy (FT‐IR), powder X‐ray diffraction (XRD) and scanning electron microscopy (SEM). Fe 3 O 4 nanoparticles were used as a nano‐adsorbent to remove Cd 2+ from water at room temperature. The results showed that this nano‐adsorbent is effective in removing Cd 2+ from contaminated water sources, and that the maximal effectivity of adsorption occurs at pH = 6. Magnetic measurements of complex 1 and Fe 3 O 4 nanoparticles at room temperature revealed paramagnetic and superparamagnetic behavior, respectively.