Synthesis of Fe3O4 Nanoparticles and their Magnetic Properties
Yan WeiDepartment of Geriatric Dentistry, School and Hospital of Stomatology, Peking University, Beijing, 100081, ChinaBing HanDepartment of orthodontics, School and Hospital of Stomatology, Peking University, Beijing, 100081, ChinaXiaoyang HuDepartment of Geriatric Dentistry, School and Hospital of Stomatology, Peking University, Beijing, 100081, ChinaYuanhua LinState Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, ChinaXinzhi WangDepartment of Prosthodontics, School and Hospital of Stomatology, Peking University, Beijing, 100081, ChinaXuliang DengDepartment of Geriatric Dentistry, School and Hospital of Stomatology, Peking University, Beijing, 100081, China
2012en
ABI
Аннотация
Fe3O4 magnetic nanoparticles (MNPs) were synthesized by a co-precipitation method using sodium citrate and oleic acid as modifiers. Phase composition and microstructure analysis indicate that the sodium citrate and oleic acid have been successfully grafted onto the surface of Fe3O4 MNPs. The magnetic behaviors reveal that the modification can decrease the saturation magnetization of Fe3O4 MNPs due to the surface effect. Fe3O4 MNPs modified by sodiumcitrate and oleic acid show excellent dispersion capability, which should be ascribed to the great reduction of high surface energy and dipolar attraction of the nanoparticles.
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