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Hydrothermal Synthesis of Various Shape-Controlled Europium Hydroxides
Hongjuan Zheng1, Kongjun Zhu1, Ayumu Onda2
1State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Nanomaterials (Basel, Switzerland)
|March 6, 2021
Summary
Europium hydroxide (Eu(OH)3) was synthesized in various shapes and sizes using hydrothermal reactions. Initial pH and temperature control the crystalline phase and morphology of the resulting europium products.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Nanotechnology
Background:
- Europium hydroxide (Eu(OH)3) is a significant inorganic compound with potential applications in various fields.
- Controlling the morphology and size of Eu(OH)3 is crucial for tailoring its properties.
Purpose of the Study:
- To synthesize Eu(OH)3 with diverse, controlled morphologies (plate, rod, tube, prism, nanoparticles).
- To investigate the influence of synthesis parameters on the crystalline phase and morphology of Eu(OH)3.
- To propose a formation mechanism for morphology and size control.
Main Methods:
- Hydrothermal synthesis.
- X-ray Powder Diffraction (XRD) for crystalline phase analysis.
- Field Emission-Scanning Electron Microscopy (FE-SEM) for morphology and size characterization.
- Thermogravimetry (TG) for thermal stability analysis.
Main Results:
- Successful synthesis of Eu(OH)3 with various controlled morphologies and sizes.
- Demonstrated influence of initial pH and reaction temperature on crystalline phase and morphology.
- Proposed a formation process for controlling Eu(OH)3 morphology and size.
Conclusions:
- Hydrothermal synthesis offers a versatile route for producing shape-controlled Eu(OH)3.
- Initial pH and reaction temperature are key parameters for controlling Eu(OH)3 characteristics.
- Understanding the formation process enables tailored synthesis of europium-based materials.
