Bulletin of the Korean chemical society | |
Synthesis of Magnetic Nanoparticles of Fe3O4 and CoFe2O4 and Their Surface Modification by Surfactant Adsorption | |
Shi-Yong Zhao1  Don Keun Lee1  Young Soo Kang1  Chang Woo Kim1  Hyun Gil Cha1  Young Hwan Kim1  | |
关键词: Magnetic nanoparticles; Surfactant adsorption; Fe3O4; CoFe2O4; | |
DOI : | |
学科分类:化学(综合) | |
来源: Korean Chemical Society | |
【 摘 要 】
Fe3O4 and CoFe2O4 magnetic nanoparticles have been synthesized successfully in aqueous solution and coated with oleic acid. The solid and organic solution of the synthesized nanoparticles was obtained. Self-assembled monolayer films were formed using organic solution of these nanoparticles. The crystal sizes determined by Debye-Scherre equation with XRD data were found close to the particle sizes calculated from TEM images, and this indicates that the synthesized particles are nanocrystalline. Especially, EDS, ED, FT-IR, TGA/DTA and DSC were used to characterize the nanoparticles and the oleic acid adsorption, and it was found that oleic acid molecule on the Fe3O4 nanoparticle is a bilayer adsorption, while that on CoFe2O4 nanoparticle is single layer adsorption. The superparamagnetic behavior of the nanoparticles was documented by the hysteresis loop measured at 300 K.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912010240020ZK.pdf | 6651KB | download |