Synthesis of highly magnetized iron nanoparticles by a solventless thermal decomposition method

被引:59
作者
Han, Young Chul [1 ]
Cha, Hyun Gil [1 ]
Kim, Chang Woo [1 ]
Kim, Young Hwan [1 ]
Kang, Young Soo [1 ]
机构
[1] Pukyong Natl Univ, Dept Chem, Pusan 608737, South Korea
关键词
D O I
10.1021/jp0686285
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The alpha-Fe nanoparticle was successfully synthesized by a solventless thermal decomposition method. The metal(2+)-oleate(2) complex prepared with metal salts and surfactant in aqueous solution was transformed to metal oxide. The metal oxide nanoparticle synthesized from the metal(2+)-oleate(2) complex was mixed with salt powder as a separating media. The metal oxide mixture was reduced to alpha-Fe nanoparticles by Ar + 4% H-2 mixture gas, and then it was annealed under a high-vacuum system of 1.8 x 10(-5) Torr at 700 degrees C. The NaCl powder that was used instead of a surfactant plays an important role to keep the size and shape of the nanoparticles. The magnetization value of the prepared alpha-Fe nanoparticles is 213 emu/g, and the mean particle size of the alpha-Fe nanoparticles is 35 nm.
引用
收藏
页码:6275 / 6280
页数:6
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