Preparation of Water-based Fe3O4 Magnetic Fluids via Chemical Co-precipitation as Precursors of Complez Adsorbent

摘要：

The water-based Fe3O4 magnetic fluids were prepared by chemical co-precipitation of Fe2+ and Fe3+ using NaOH to control the pH, different surfactants were added to modify the magnetic particles. The stability, viscosity of the fluids and the magnetic property of magnetic particles were evaluated. The influences of different factors, such as reacting time, temperature, stirring speed, pH value, supersonic dispersing time, molar ratio of Fe2+/Fe3+, and surfactant, on properties of magnetic fluids were discussed. The experimental results showed that the optimal conditions were: molar ratio of Fe2+ and Fe3+ 1:1.5, pH value 9.0, stirring speed 1500 r·min-1, reacting time 10 minutes, temperature 55 ℃, supersonic dispersing time 30 minutes, suitable surfactant Tween 80.

关键词： water-based magnetic fluids chemical co-precipitation magnetic particles

作者: BAO Zhenglei WANG Jingsong LIU Huijun XIE Shuibo LIU Liping

作者单位: Institute of Environmental Protection,University of South China,Hengyang 421001,Hunan,China

会议类型: 国际会议

会议名称: 2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)

会议地点: 上海

会议语种:英文

页码: 1586-1591

在线出版日期: 2009-06-02（万方平台首次上网日期，不代表论文的发表时间）