Facile synthesis of nanocrystalline magnesium oxide with high surface area

Nanocrystalline magnesium oxide with high surface area has been synthesized by precipitation method using ammonium hydroxide and polyvinyl alcohol as precipitant and polymeric surfactant, respectively. The results show that the polymeric surfactant (PVA) has a significant effect on the synthesis of MgO nanocrystals. The specific surface area of the MgO powder decreases from 123 m2g− 1 to 61 m2g− 1and the crystallite size on the (200) plane increases from 12.2 nm to 14.2 nm with increasing temperature from 600 °C to 800 °C. Transmission electron microscopy (TEM) and N2 adsorption/desorption isotherm also show a nanostructure consisting of aggregates or agglomerates of particles forming slit shaped pores (plates or edged particles like cubes).

Nanocrystalline magnesium oxide with plate like shape and a high specific surface area of about 116 m2 g− 1 and a crystallite size of about 12 nm was synthesized by a facile synthesis method using polyvinyl alcohol as surfactant.Figure optionsDownload as PowerPoint slide