Synthesis of nano-sized MgO particle and thin film from diethanolamine-stabilized magnesium-methoxide

Add time:08/21/2019    Source:sciencedirect.com

The effects of diethanolamine (DEA) addition on the crystallization behavior of magnesium methoxide and the stabilization behavior of the Mg-alkoxide were investigated using differential scanning calorimetry, thermogravimetry, X-ray powder diffraction, transmission electron microscopy, and X-ray photoemission spectroscopy. 20 mol% DEA additions to magnesium methoxide showed enhanced stability such that a time-dependent change in the sol was not observed in air. Moreover, the DEA addition enhanced the crystallization process. Crystalline MgO in the 20 mol% of DEA-added magnesium methoxide powder was observed at 300°C for samples processed in O2 and a high degree of crystallinity was observed at 400°C when processed in O2. The enhanced crystallization of Mg-methoxide with added DEA in O2 is discussed in terms of structural relaxation and heat generation during the ignition of an organic species of DEA. Using a DEA added sol, a MgO thin film with a high degree of crystallinity was prepared at 400°C in O2.

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