Abstract
The reaction of iron chlorides with an alkaline reagent is one of the most prominent methods for the synthesis of iron oxide nanoparticles.
Highlights
Iron oxide nanoparticles (FeOx NPs) are intensively studied because of their broad range of applications in different areas like sensing,[1] catalysis,[2] magnetic storage media,[3] and biomedicine.[4,5,6] The most prominent iron oxides are maghemite (γ-Fe2O3) and magnetite (Fe3O4) with a spinel structure.[7]
The formation mechanism of SnO2 NPs is illustrated by Caetano et al coupling Raman spectroscopy and extended X-ray absorption fine structure (EXAFS), which were supported by SAXS data.[26]
We study the formation of maghemite nanoparticles from ferric and ferrous chloride using TREA in situ supplemented by complementary X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman and selected area electron diffraction (SAED)
Summary
Iron oxide nanoparticles (FeOx NPs) are intensively studied because of their broad range of applications in different areas like sensing,[1] catalysis,[2] magnetic storage media,[3] and biomedicine.[4,5,6] The most prominent iron oxides are maghemite (γ-Fe2O3) and magnetite (Fe3O4) with a spinel structure.[7]. Time-resolved in situ studies on the formation mechanism of iron oxide nanoparticles using combined fast-XANES and SAXS† We present the first in situ study of the formation process of maghemite NPs in aqueous solution coupling X-ray absorption near edge spectroscopy (XANES) and SAXS investigation.
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