Discipline: Nanoscience or Materials Science
Subcategory: Nanoscience
Session: 4
Room: Forum
Mikiyah Jefferson - Jackson State University
Co-Author(s): Jing Qu, Jackson State University, Jackson, MississippiYongfeng Zhao, Jackson State University, Jackson, Mississippi
We report a new strategy to fabricate metal-doped iron oxide nanoparticles (MFe 2 O 4 ,M=Fe 2+ , Mn 2+ , Ni 2+ , Co 2+ ) in diethylene glycol (DEG). This synthesis route is based on thedecomposition of Fe(acac) 3 and M(acac) 2 under a certain temperature. A continuous addition ofprecursors results in continued growth of magnetic nanoparticles. The as-synthesized particleshave a spherical single crystal structure as characterized by TEM and XRD. However, the sizeand distribution of MFe 2 O 4 nanoparticles were found to be affected by the type and percentage ofdopant metal. Meanwhile, the magnetization for MnFe 2 O 4 samples exhibited improvement whileother samples decrease according to superconducting quantum interference device (SQUID)magnetometry measurement at the temperature of 10 K and 300 K. Changes in magneticproperties lead to differences in dispersibility of particles in aqueous media. For practical utility,the MRI imaging results were compared before and after metal doping and found that manganeseand cobalt metals improved T 2 -weighted images. Hence, these MFe 2 O 4 nanoparticles have greatpotential for magnetic nanodevice and biomedical applications.
Funder Acknowledgement(s): Yongfeng Zhao
Faculty Advisor: Yongfeng Zhao, yongfeng.zhao@jsums.edu
Role: The synthesis of the iron oxide nanoparticles based on the decomposition of Fe(acac) 3 and M(acac) 2 under a certain temperature.