Hematite-based nanocomposites were synthesized using iron (II) chloride, cetyltrimethylammonium bromide (CTAB) as a surfactant and tert-butanol as a cosurfactant. Silica and sulfonate-functionalized polystyrene (PS) were used as hard template materials. Under basic condition which was regulated by ammonium hydroxide, ferrous ions reacted with hydroxide ions, and iron hydroxide nuclei and particles which were stabilized by CTAB molecules were formed. The electrostatic interaction between negatively charged core and the particles surrounded by cationic surfactant induced iron compounds to be immobilized onto the surface of spherical templates. In the case of silica-hematite composite preparation, additional calcination was needed in the final step to unify iron compound with multi phase into hematite. In this study, we estimated morphology, crystallinity, BET surface area and so on according to the variation in the iron salt and surfactant quantities. In addition, adsorption properties of samples were examined through methylene blue (MB) adsorption using UV-vis spectroscopy.

Formation and characterization of hematite-based nanocomposites prepared in surfactant/cosurfactant system

248th National Meeting (2014)

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