4.2 Article

Facile one-pot synthesis of γ-Fe2O3 nanoparticles by inductive heating

期刊

MATERIALS ADVANCES
卷 2, 期 17, 页码 5616-5621

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ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ma00280e

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  1. Department of Energy [EC9980]

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The study demonstrates the direct one-pot synthesis of gamma-Fe2O3 nanoparticles through an inductive heating method, using acetylferrocene as a solid precursor for the first time. Oleylamine and trioctylamine act as solvent, binding ligand, and reducing agent in the synthesis process to produce gamma-Fe2O3 NPs with a relatively narrow size distribution.
The direct one-pot synthesis of gamma-Fe2O3 nanoparticles (NPs) has been demonstrated through a facile inductive heating method. Acetylferrocene, a solid precursor, has been used for the first time to the best of our knowledge during the synthesis. Traditionally, solid precursors have not been used in the hot-injection (HI) technique because of their limited solubility and less likely outcome to produce the high supersaturation needed for diffusion-limited growth of the NPs. Oleylamine and trioctylamine serve as a solvent, a binding ligand, and a reducing agent in the synthesis to produce gamma-Fe2O3 NPs with relatively narrow size distribution. The structures, morphologies, and magnetic properties of gamma-Fe2O3 NPs are studied. The phase pure gamma-Fe2O3 NPs obtained display uniform morphology and good magnetic property. Therefore, the inductive heating technique has the potential to provide an industrial level scale-up synthesis in continuous reactors, which is not available for the HI method relying on batch synthesis.

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