Oleic acid-modified Fe₃O₄; OA@Fe3O4
Oleic acid-modified Fe₃O₄ (5 nm–60 nm) is a magnetic nanomaterial with oleic acid functional groups on its surface. It exhibits properties such as oil solubility, superparamagnetism, and surface activity, and can be prepared by various methods including co-precipitation and thermal decomposition. It has wide applications in fields like biomedicine, materials science, and environmental science.
Alias: OA@Fe₃O₄
Appearance: Black powder or liquid
Particle Size: 5 nm; 10 nm; 20 nm; 30 nm; 40 nm; 50 nm; 60 nm
Solubility: Oil-soluble, dispersible in organic solvents such as cyclohexane, chloroform, and tetrahydrofuran.
Properties
Excellent Oil Solubility: Oleic acid modification endows Fe₃O₄ nanoparticles with good dispersibility in non-polar solvents, preventing agglomeration and enabling stable existence in oil-phase systems.
Superparamagnetism: It possesses superparamagnetism, allowing rapid response to external magnetic fields for efficient magnetic separation. In the absence of a magnetic field, its magnetism disappears, which does not affect its dispersion in solutions or subsequent operations.
Surface Activity: The surface of oleic acid-modified nanoparticles has a certain degree of activity, enabling specific binding with other molecules through covalent bonding or electrostatic interaction, thus facilitating further functional modification and application.
