Open AccessFormation of Fe(0)‐Nanoparticles via Reduction of Fe(II) Compounds by Amino Acids and Their Subsequent Oxidation to Iron Oxides
Author(s) -
Katarína Klačanová,
Peter Fodran,
Peter Šimon,
Peter Rapta,
Roman Boča,
Vladimı́r Jorı́k,
Marcel Miglierini,
Emil Kolek,
Ľubomír Čaplovič
Publication year - 2012
Publication title -
journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.436
H-Index - 50
eISSN - 2090-9063
pISSN - 2090-9071
DOI - 10.1155/2013/961629
Subject(s) - chemistry , nanoparticle , metal , reducing agent , iron oxide nanoparticles , inorganic chemistry , iron oxide , colloid , oxygen , mössbauer spectroscopy , nuclear chemistry , thermogravimetry , oxide , organic chemistry , chemical engineering , crystallography , engineering
Iron nanoparticles were prepared by the reduction of central Fe(II) ion in the coordination compounds with amino acid ligands. The anion of the amino acid used as a ligand acted as the reducing agent. Conditions for the reduction were very mild; the temperature did not exceed 52°C, and the optimum pH was between 9.5 and 9.7. The metal iron precipitated as a mirror on the flask or as a colloid in water. Identification of the product was carried out by measuring UV/VIS spectra of the iron nanoparticles in water. The iron nanoparticles were oxidized by oxygen yielding a mixture of iron oxides. Oxidation of Fe(0) to Fe(II) took several seconds under air. The size and properties of iron oxide nanoparticles were studied by UV/VIS, TEM investigation, RTG diffractometry, Mössbauer spectroscopy, magnetometry, thermogravimetry, and GC/MS
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