Environmentally Friendly Synthesis of Magnetic Iron Oxide Nanoparticles with Controlled Particle Size and Agglomeration

开发了一种能够在环境友好的条件下制备磁性氧化铁(磁铁矿)纳米颗粒的合成工艺。在这一过程中，工业上用作颗粒材料微粉化研磨机的卧式滚筒式球磨机被用作反应器。通过合成实验和磨球行为数值模拟，分析了磁铁矿的形成过程。结果表明，反应机理清晰，一次粒子和聚集体的大小可以控制。

A synthesis process which can provide magnetic iron oxide(magnetite) nanoparticles under environmentally friendly conditions has been developed. In this process, a horizontal tumbling ball mill, which is industrially used as a grinding machine for micronization of particulate materials, is used as a reactor. The formation of magnetite was analyzed through the synthesis experiments and the numerical simulation of balls behavior in the mill. As a result, the reaction mechanism was clarified and the sizes of primary particles and aggregates could be controlled.