Abstract
In this article, a simple, economic and environment-friendly approach is explored to prepare Fe3O4 nanoparticles by using air oxidation at room temperature. Furthermore, the Fe3O4 magnetic nanoparticles (MNPs) have been modified with sodium oleate successfully to form super-hydrophobic surfaces. The alkali source played an important role in controlling the morphologies of Fe3O4 MNPs. Either Fe3O4 MNPs or sodium oleate modified Fe3O4 MNPs possessed good magnetic property, and the as-prepared modified Fe3O4 nanoparticles are both hydrophobic and lipophilic. Therefore, Fe3O4/sodium oleate could be dispersed stable in the oil medium and have been applied in the cleanup engine oil from the water surface. It will open up a potential and broad application in wastewater treatment.
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