New Synthetic Route and Characterization of Magnesium Borate Nanorods

In the current research, we have successfully fabricated single-crystalline triclinic Mg 2 B 2 O 5 and orthorhombic Mg 3 B 2 O 6 nanorods by a solvothermal method under supercritical conditions. Detailed microstructures of as-synthesized products were characterized by X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy, and X-ray photoelectron spectroscopy. It was found that the morphology and phase of the products were strongly dependent on the reaction conditions, such as the ratio of Mg/B, temperature, reaction time, and solvent media. The formation process of Mg 2 B 2 O 5 nanorods was illustrated based on SEM observations of the different reaction stages. This technique may also have great potential in realizing other nanostructured materials.