Authors
Abstract
Magnetic nanoparticles (MNPs) were synthesized using the co-deposition method. They were coated with a silica layer through a sol-gel process and treated with dodecyl sulfate (DS) and dodecanol (DO). XRD, SEM, VSM, TGA, BET, and FTIR analysis were employed to analyze these materials. SEM showed that the particles are spherical with good monodispersity. TGA- DTG showed they are stable up to a minimum of 200ºC. VSM tests revealed the saturation magnetization values of 16 emu g-1 for Fe3O4@SiO2@DO and 15 emu g-1 for Fe3O4@SiO2@DS. MNP@DO and MNP@DS, with specific surface areas of 112.4 and 117.1 m2/g, exhibited oil adsorption capacities of up to 3 and 2 times their own mass for edible oil, respectively. These catalysts could be removed by employing an external magnet, and they demonstrated reusability even after 10 cycles. The findings indicate that these nanomaterials can be used as low-cost and effective substances for oil/solvent spill cleanups.
