Synthesis and characterization of mesoporous MgO by template-free hydrothermal method

• A simple synthesis of porous MgO with diameter size from 3 to 10 μm without any templates.
• Effect of temperature and time were investigated.
• Systematic characterization by TG/DTA, XRD, SEM, TEM, and nitrogen adsorption–desorption isotherm of MgO.
• A possible formation and crystal growth mechanism of mesopores MgO is proposed.

Mesoporous MgO particles have been synthesized through a novel template-free hydrothermal co-precipitation method using a Mg(NO3)2 solution as the magnesium source and NaCO3 as precipitant. The samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and N2 adsorption–desorption analysis. The results indicate that the MgO samples have a disordered mesoporous structure, a large BET surface area, and a large pore volume. The effect of reaction temperature on the MgO product BET surface area was studied. A possible formation and crystal growth mechanism for mesoporous MgO is proposed.

Figure optionsDownload as PowerPoint slide