Cr2O3 and MnCr2O4 spinel chromite nanoparticles were synthesized using chemically derived sol–gel technique. Crystal structure was analyzed using X-ray diffraction, and phase transition from a...

Feb 25, 2014 · Results obtained by powder XRD, FE-SEM, EDS, FTIR and UV-VIS. spectrometer is concordant, and confirmed the crystalline phase (Cr 2 O 3), purity (Cr, O), bonding (Cr-O), and energy band gap (3.2 eV) of Cr 2 O 3 nanostructures.

The nanocomposite is synthesized via a one-pot reaction using K2Cr2O7 and 2-aminobenzene-1-thiol monomer, and the presence of Cr2S3-Cr2O3 is confirmed by XRD and XPS analysis within the...

Dec 15, 2017 · XRD analysis confirms that Cr2 O 3 thin films have a rhombohedral corundum type structure with a preferential (1 0 4) orientation. The band gap energy, derived from the measured transmittance and reflection spectra, is found to be 3.38 eV.

Here we report a solvothermal–hydrothermal based method for the synthesis of spherical chromium oxide (Cr2O3) nanoparticles in 1-butyl-3-methyl imidazolium bromide ( [BMIM]⁺ [Br]⁻) and water (1:1...

Nov 1, 2017 · Herein, we report the synthesis of chromium oxide nanoparticles, α -Cr2O3 NPs, followed by full characterization via XRD, SEM, XPS, and N2 sorptiometry.

Cr2O3 is Corundum structured and crystallizes in the trigonal R-3c space group. The structure is three-dimensional. Cr3+ is bonded to six equivalent O2- atoms to form a mixture of edge, corner, and face-sharing CrO6 octahedra. The corner-sharing octahedra tilt angles range from 47–61°.

Apr 15, 2005 · We have synthesized Cr nanoparticles by arc-discharge and Cr 2 O 3 nanoparticles by subsequent annealing the as-prepared Cr nanoparticles. The structure of these nanoparticles is studied by means of X-ray diffraction, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscope.

Mar 8, 2023 · Herein, we carefully investigated the Fe3+ doping effects on the structure and electron distribution of Cr2O3 nanoparticles using X-ray diffraction analysis (XRD), maximum entropy method (MEM), and density functional theory (DFT) calculations.

All the crystalline peaks belonged to the hexagonal Cr2O3 structure, according to (PDF-98-009-7850) databases. The XRD results showed that the crystallization developed throughout the coatings...