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Rodlike YMn2O5 Powders Derived from Hydrothermal Process Using Oxygen as Oxidant
Jun Shi1, Jing Wang1, Huifen He1
1Liaoning Key Laboratory for Fabrication and Application of Superfine Inorganic Powders, Dalian Jiaotong University, Dalian 110621, China.
Materials (Basel, Switzerland)
|February 14, 2020
Summary
This study presents a simple hydrothermal method to create YMn2O5 powders. These nanostructured materials exhibit unique optical properties, making them suitable for advanced applications.
Area of Science:
- Materials Science
- Solid State Chemistry
- Nanotechnology
Background:
- Yttrium manganese oxides (YMn2O5) are complex materials with potential applications in various fields.
- Controlling the synthesis of YMn2O5 with specific morphologies and properties is crucial for optimizing performance.
Purpose of the Study:
- To develop a facile hydrothermal method for synthesizing YMn2O5 powders.
- To investigate the influence of synthesis parameters on the structure and morphology of YMn2O5.
- To characterize the optical properties and determine the energy bandgap of the synthesized YMn2O5.
Main Methods:
- Hydrothermal synthesis using oxygen as an oxidant.
- Characterization using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and High-Resolution Transmission Electron Microscopy (HRTEM).
Main Results:
- Rod-like YMn2O5 structures were successfully fabricated, with stirring time, hydrothermal temperature, and time identified as key factors.
- Oxidation time significantly influenced the oxidation states of manganese ions (Mn2+ to Mn3+ and Mn4+).
- Single crystalline YMn2O5 nanorods with growth along the c-axis were obtained, exhibiting an intense orange emission at 596 nm under 397 nm excitation and an energy bandgap of 1.18 eV.
Conclusions:
- A facile hydrothermal method enables the controlled synthesis of YMn2O5 nanorods.
- The synthesis parameters critically influence the material's morphology and crystalline structure.
- The synthesized YMn2O5 demonstrates promising luminescent properties due to Mn4+ ion incorporation, with a determined energy bandgap of 1.18 eV.
