Spectroscopic and Morphological Examination of Co0.9R0.1MoO4 (R = Ho, Yb, Gd) Obtained by Glycine Nitrate Procedure
Milena Rosić1, Maja Milošević2, Maria Čebela1
1"Vinča" Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, 11351 Belgrade, Serbia.
Materials (Basel, Switzerland)
|January 25, 2025
Summary
The glycine nitrate procedure (GNP) offers an easy and effective way to synthesize Co0.9R0.1MoO4 materials with controlled composition and morphology. This combustion method ensures stoichiometry, homogeneity, and purity, with thermal treatments altering particle characteristics and color.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Nanomaterials Synthesis
Background:
- Controlling composition and morphology in mixed metal molybdates is crucial for their applications.
- The glycine nitrate procedure (GNP) is a versatile combustion synthesis method.
- Cobalt-rare earth molybdates (Co0.9R0.1MoO4) are of interest due to their unique properties.
Purpose of the Study:
- To investigate the efficacy of the glycine nitrate procedure (GNP) for synthesizing Co0.9R0.1MoO4 (R = Ho, Yb, Gd).
- To characterize the composition, morphology, and properties of the synthesized materials.
- To explore the impact of thermal treatment on the material's characteristics.
Main Methods:
- Glycine nitrate procedure (GNP) for combustion synthesis.
- Characterization techniques including DTA, XRD, FTIR, FESEM, and nitrogen adsorption.
- Thermal treatment at 1100 °C.
Main Results:
- GNP provided excellent control over stoichiometry, homogeneity, and purity.
- Synthesized Co0.9R0.1MoO4 samples exhibited anisotropic particle shapes and agglomerated structures.
- Thermal treatment led to significant changes in microstructure, particle size, dominant wavelength, and color purity, attributed to cobalt concentration.
Conclusions:
- The glycine nitrate procedure (GNP) is a highly effective method for synthesizing Co0.9R0.1MoO4 with controlled properties.
- The synthesized materials display unique microstructural and morphological characteristics.
- Thermal treatment significantly influences the optical and structural properties of these molybdates.
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