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    张姝, 王树林, 李生娟. Fe3O4/MnO2磁性复合颗粒的制备及表征[J]. 机械工程材料, 2009, 33(5): 41-44.
    引用本文: 张姝, 王树林, 李生娟. Fe3O4/MnO2磁性复合颗粒的制备及表征[J]. 机械工程材料, 2009, 33(5): 41-44.
    shu
    ZHANG Shu, WANG Shu-lin, LI Sheng-juan. Characterization and Preparation of Fe3O4/MnO2 Composite Magnetic Particles[J]. Materials and Mechanical Engineering, 2009, 33(5): 41-44.
    Citation: ZHANG Shu, WANG Shu-lin, LI Sheng-juan. Characterization and Preparation of Fe3O4/MnO2 Composite Magnetic Particles[J]. Materials and Mechanical Engineering, 2009, 33(5): 41-44.
    shu

    Fe3O4/MnO2磁性复合颗粒的制备及表征

    Characterization and Preparation of Fe3O4/MnO2 Composite Magnetic Particles

      摘要
    • 摘要: 以纳米Fe3O4颗粒为核,分别采用液相沉积法和溶胶-凝胶法两种方法将MnO2包覆在其上制备了Fe3O4/MnO2磁性复合颗粒,并借助XRD、TEM、FTIR和VSM等手段分别对纳米Fe3O4颗粒和两种复合颗粒进行表征.结果表明:采用液相沉积法进行包覆可生成以多个纳米Fe3O4颗粒为核、粒径约为200 nm的近球形Fe3O4/MnO2磁性复合颗粒,其饱和磁化强度为24.4 kA·m-1;采用溶胶-凝胶法进行包覆则生成以单个纳米Fe3O4颗粒为核、粒径约为50 nm的磁性复合颗粒,包覆层为絮状MnO2,其饱和磁化强度为16.5 kA·m-1.

       

      Abstract: Using nano-Fe3O4 particles as cores,Fe3O4/MnO2 composite particles that MnO2 coating on the cores were prepared by fluid deposition method and sol-gel method.The structure and morphology of the nano-Fe3O4 particle and composite particles were characterized by the means of XRD,TEM,FTIR and VSM.The results indicate that the size of Fe3O4/ MnO2 composite particles prepared by fluid deposition method and contained several Fe3O4 particles as core was about 200 nm,and the size of the composite particles prepared by sol-gel method was about 50 nm.The saturated magnetizations of Fe3O4/MnO2 composite particles were 24.7 kA·m-1 and 16.5 kA·m-1 respectively.

       

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