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Synthesis and Characterization of Regular Hexagonal Fe3O4 Nanoplates
- Source :
- Russian Journal of Physical Chemistry A. 95:1432-1438
- Publication Year :
- 2021
- Publisher :
- Pleiades Publishing Ltd, 2021.
-
Abstract
- Uniform hexagonal hematite (α-Fe2O3) nanoplates were prepared via a facile alcohol-thermal reaction without using any template. Each nanoplate is enclosed by (0001) basal planes and {10 $$\bar {1}$$ 2} side surfaces. The phase, size, shape and growth orientation of the resulting product were characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM).In order to obtain a product with more uniform and stable morphology, on the basis of predecessors' studies, the reaction time was adjusted to a small extent, so that an ideal hexagonal nanoplates was obtained. Magnetite (Fe3O4) nanoplates were obtained through a reduction process without changing the morphology and size of the resulting α-Fe2O3 nanoplates. Detection of transition from α-Fe2O3 to Fe3O4 nanoplates by X-ray photoelectron spectroscopy (XPS).The magnetic properties of these reduced nanoplates were investigated and it was found that these nanoplates have higher coercivity and lower saturation magnetization than many other nanostructured iron oxides. The surface adsorption of nonmagnetic materials and their flake morphology may be the cause of this phenomenon.
- Subjects :
- chemistry.chemical_compound
Materials science
X-ray photoelectron spectroscopy
chemistry
Chemical engineering
Transmission electron microscopy
Scanning electron microscope
Phase (matter)
Physical and Theoretical Chemistry
Coercivity
High-resolution transmission electron microscopy
Powder diffraction
Magnetite
Subjects
Details
- ISSN :
- 1531863X and 00360244
- Volume :
- 95
- Database :
- OpenAIRE
- Journal :
- Russian Journal of Physical Chemistry A
- Accession number :
- edsair.doi...........d586706669d73fbabe3aab3fe7b7d5fe