One-pot synthesis of monodisperse CoFe2O4@Ag core-shell nanoparticles and their characterization

Nanoscale Research Letters

Jumpei Aisu¹  Hiroki Ikake¹  Kosuke Sugawa¹  Masahiro Kato¹  Joe Otsuki¹  Shigeru Shimizu¹  Shuta Hara¹  Kouichi Takase²  Takashige Aono² 

[1] Department of Materials and Applied Chemistry, College of Science and Technology, Nihon University;Department of Physics, College of Science and Technology, Nihon University;

关键词: Core-shell nanoparticles;    Cobalt ferrite;    Supermagnetism;    Surface plasmon resonance;   

DOI  :  10.1186/s11671-018-2544-z

来源: DOAJ

【 摘 要 】

Abstract In recent years, monodispersed magnetic nanoparticles with a core/shell structure are expected for their wide applications including magnetic fluid, recoverable catalysts, and biological analysis. However, their synthesis method needs numerous processes such as solvent substitution, exchange of protective agents, and centrifugation. A simple and rapid method for the synthesis of monodispersed core-shell nanoparticles makes it possible to accelerate their further applications. This paper describes a simple and rapid one-pot synthesis of core (CoFe2O4)-shell (Ag) nanoparticles with high monodispersity. The synthesized nanoparticles showed plasmonic light absorption owing to the Ag shell. Moreover, the magnetic property of the nanoparticles had a soft magnetic behavior at room temperature and a hard magnetic behavior at 5 K. In addition, the nanoparticles showed high monodispersity with a low polydispersity index (PDI) value of 0.083 in hexane.

【 授权许可】

Unknown