In areas like medicine, environmental remediation and catalytic reactions, nanoparticles with magnetic characteristics are frequently used. Ferric magnetites (Fe3O4) covered with sodium oleate result in nanoparticles with a range of 83nm-95nm. These reactants form a carbon-carbon double bond which is oxidized with potassium permanganate (KMnO4) and transformed into carboxylic acid. The diameter of the nanoparticles decreased in size after being oxidized which presented the range of 68nm-77nm. Two methods were utilized to modify the oxidized surface. The first method employed thionyl chloride while the second method used hypochloric acid. In both methods, the chloride ion was used in excess to substitute the carboxyl functional group for a chloride group in the modified surface magnetite. Analytic techniques like infrared spectroscopy and x-ray diffraction were used to determine functional groups in the surface and its crystalline composition. The magnetic properties of the nanoparticles were determined by magnetic saturation. Using thionyl chloride, the infrared displayed the presence of the chloride ion in the surface with a frequency of 673.23cm-1 while the Hypochloric acid was 570.39cm-1.

Modification of magnetite nanoparticle surface through Sn2 substitution of the hydroxide functional group with a chloride group

253rd National Meeting (2017)

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