In this research, alumina-grafted manganese oxide nanoparticles were synthesized successfully through coprecipitation method. Manganese and aluminium salts and ammonium hydroxide were used as starting reagents and a precipitation agent, respectively. Also, various surfactants such as polyoxyethylenesorbitan monolaurate, hexadecyltrimethylammonium bromide, and sodium dodecyl sulfate were added into the reaction medium. The effects of these surfactants on the formation and crystal structure of Al2O3-coated manganese oxide were studied by the variation of their concentrations. In addition, the temperature of heat treatment for samples was controlled to examine its influence on the thermal stability of composites. The synthesized alumina-Mn oxide nanocomposites were characterized by FE-SEM, TEM, XRD, and EDS. The thermal properties of prepared composites were investigated by using DSC and TGA.

Influences of surfactants and calcination temperature on the morphology and thermal property of alumina-grafted manganese oxide nanocomposites prepared by coprecipitation method

244th National Meeting (2012)

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