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    武素丽

    • 教授     博士生导师   硕士生导师
    • 性别:女
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:化工学院
    • 学科:应用化学. 精细化工
    • 办公地点:西部校区实验楼E-422
    • 联系方式:13842603107
    • 电子邮箱:wusuli@dlut.edu.cn

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    Controllable 5-sulfosalicylic acid assisted solvothermal synthesis of monodispersed superparamagnetic Fe3O4 nanoclusters with tunable size

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    论文类型:期刊论文

    发表时间:2017-02-01

    发表刊物:JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

    收录刊物:SCIE、EI

    卷号:423

    页面范围:111-117

    ISSN号:0304-8853

    关键字:Monodisperse; Superparamagnetic nanoclusters; 5-Sulfosalicylic acid; Mixed-solvent system

    摘要:Monodispersed Fe3O4 nanoclusters were synthesized in a one-pot solvothermal route with 5-sulfosalicylic acid (SSA) as the functional ligand in a mixed-solvent system of diethylene glycol/ethylene glycol (DEG/EG). Nucleation and aggregation growth model was responsible for the formation of secondary structure of the clusters. In the process, the size of the clusters can be effectively controlled by varying the amounts of SSA and the volume ratio of DEG/EG. The nanoclusters exhibited superparamagnetic properties with high saturation magnetization value of about 68.7 emu g(-1) at room temperature. The water-soluble small-molecule SSA grafted on the surface of Fe3O4 nanocrystals rendered the superparamagnetic clusters dispersible in water, which is crucial for potential applications in biomedical fields.