Back to Search
Start Over
Jahn–Teller distorted Cu1−xNixCr2O4 (x = 0, 0.5, 1) nanoparticles
- Source :
- Surface Science Spectra. 27:024015
- Publication Year :
- 2020
- Publisher :
- American Vacuum Society, 2020.
-
Abstract
- In this report, x-ray photoelectron spectroscopy data for three types of Cu-doped nickel chromite nanoparticles are presented. CuCr2O4, Cu0.5Ni0.5Cr2O4, and NiCr2O4 were prepared using the citric acid-assisted sol-gel method. All samples were amorphous after the initial gel preparations were dried, but after calcination at temperatures higher than 700 °C, the samples crystallized in a spinel structure. X-ray diffraction patterns for the samples were well fitted with the I41/amd space group. Survey scans were conducted as well as detailed scans of Cu 2p, Ni 2p, Cr 2p, and O 1s levels. The O 1s core level was well-fitted with three components, including lattice oxygen (low binding energy) and two higher binding energy components, which corresponded to surface-absorbed hydroxyl groups originating from water and alcohol used in the synthesis of the particles. The line shape of the Cu 2p core level was compatible with mixed 2+ and 1+/0+ oxidation states for Cu ions in these nanoparticles. The strong intensity of the high binding energy satellite indicated that the majority of the Cu 2p ions were in 2+ oxidation state. Finally, Ni 2p showed a mixed 3+/2+ oxidation state for Ni ions in these nanoparticles.
- Subjects :
- Materials science
Jahn–Teller effect
Spinel
Binding energy
Analytical chemistry
Nanoparticle
chemistry.chemical_element
Surfaces and Interfaces
engineering.material
Condensed Matter Physics
Surfaces, Coatings and Films
law.invention
Nickel
X-ray photoelectron spectroscopy
chemistry
law
Oxidation state
engineering
Calcination
Subjects
Details
- ISSN :
- 15208575 and 10555269
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Surface Science Spectra
- Accession number :
- edsair.doi...........8740b0546ec0dbfa280dfeb61fad8a42
- Full Text :
- https://doi.org/10.1116/6.0000444