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超声强化合成MgFe2O4纳米颗粒及其机理研究

徐波 王树林 李生娟 李来强

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超声强化合成MgFe2O4纳米颗粒及其机理研究

徐波, 王树林, 李生娟, 李来强

Study of synthesis and mechanism of MgFe2O4 nanoparticles by ultrasonic Intensify

Xu Bo, Wang Shu-Lin, Li Sheng-Juan, Li Lai-qiang
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  • 用超声水解方法制备MgO纳米颗粒,用化学沉淀法制备-Fe2O3纳米颗粒,将MgO/-Fe2O3混合体常温下超声活化2h,400℃固相合成制备出MgFe2O4纳米颗粒.通过X射线衍射和透射电子显微镜测试产品的化学成分、晶体结构和形貌尺寸,分析声化学反应机理及其影响因素.研究结果表明:所制备的MgFe2O4为尖晶石铁氧体,颗粒尺寸分布在2030nm之间,粒度分布均匀;超声空化效应提高了化学反应活性、增加反应物的比表面积和反应物之间的接触面积,促进固相合成反应速度,降低反应温度,实现了一般条件下难以完成的化学反应.
    MgO nano-particles are prepared by ultrasonic cavitate, and-Fe2O3 nano-particles are prepared by chemical precipitation method, then MgO and-Fe2O3 are mixed in a beaker. After the ultrasonic dispersion for 2 h, MgO/-Fe2O3 admixture is calcined at 400℃ to synthesize MgFe2O4 nano-particles. TEM and XRD tests show that MgFe2O4 takes on a spinel structure and the particles sizes range from 20 to 30 nm. The theoretieal analysis indicates that the ultrasonic cavitate effect enhances the reaction activity of raw material, augmentes specific surface area and the contact area of reactant, which can promote reaction rate, reduce reaction temperature, and make possible the chemical reaction that is difficult to complete in common condition.
    • 基金项目: 上海市科委纳米专项(批准号: 1052nm02900)和上海理工大学博士启动费(批准号: 1D-11-301-002)资助的课题.
    • Funds: Project supported by the Shanghai Committee of Science and Technology, China (Grant No. 1052nm02900) and the University of Shanghai for Science and Technology, China (Grant No. 1D-11-301-002).
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    Lu Y G, Wu X H 2011 Acta Phys. Sin. 60 046202 (in Chinese) [卢义刚, 吴雄慧 2011 物理学报 60 046202]

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    Sivakumar N, Narayanasamy A, Greneche J M, Murugarajc R, LeeY S 2010 J. Alloys and Compounds 504 395

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    Ma Q, Jiang J J, Bie S W, Du G, Feng Z K, He H H 2008 ActaPhys. Sin. 57 6577 (in Chinese) [马强, 江建军, 别少伟, 杜刚, 冯则坤, 何华辉 2008 物理学报 57 6577]

    [9]

    Chen Z Q, Li F, Li Q 2006 Chin. Phys. 15 1075

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    Konishi M, Suda N, Kurihara S 1993 Biophys. J. 64 223

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    Hoffmann M R, Hua I, Hochemer R 1996 Ultrason. Sonochem. 3163

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    Suslick K S, Neis U 1989 Scientific American 43 80

    [13]

    Bogdan N 2007 Ultrason. Sonochemi. 14 13

    [14]

    Wang P H 2003 J. Hebei Institute of Technology 14 13 (in Chinese) [王萍辉 2003 河北理工学院学报 25 154]

    [15]

    Edward B 1991 Science 253 1397

    [16]

    Dalt S D, Takimi A S, Volkmer T M, Sousa V C, Bergmann C P2011 Powder Technology 210 103

    [17]

    Hong X G, Du L C, Ye M P, Wong Y X 2004 Chin. Phys. 13 720

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    Yuan Y H, Hou X, Gao H 2006 Acta Phys. Sin. 55 446 (in Chinese) [袁艳红, 侯洵, 高恒 2006 物理学报 55 446]

  • [1]

    Suslick K S 1990 Science 247 1144

    [2]

    Mason T J 1994 Chemical Industry 1 46

    [3]

    Tamura S, Tsunekawa Y, Okumiya M, Hatakeyama M 2008 J.Mater. Proces. Technol. 206 322

    [4]

    Wang X K, Yao Z Y, Wang J G, Guo W L, Li G Q 2008 Ultrason.Sonochem. 15 43

    [5]

    Lu Y G, Wu X H 2011 Acta Phys. Sin. 60 046202 (in Chinese) [卢义刚, 吴雄慧 2011 物理学报 60 046202]

    [6]

    Azhari A, Sharifsh M, Golestanifard F, Saberi A 2010 Mater.Chem. Phys. 124 658

    [7]

    Sivakumar N, Narayanasamy A, Greneche J M, Murugarajc R, LeeY S 2010 J. Alloys and Compounds 504 395

    [8]

    Ma Q, Jiang J J, Bie S W, Du G, Feng Z K, He H H 2008 ActaPhys. Sin. 57 6577 (in Chinese) [马强, 江建军, 别少伟, 杜刚, 冯则坤, 何华辉 2008 物理学报 57 6577]

    [9]

    Chen Z Q, Li F, Li Q 2006 Chin. Phys. 15 1075

    [10]

    Konishi M, Suda N, Kurihara S 1993 Biophys. J. 64 223

    [11]

    Hoffmann M R, Hua I, Hochemer R 1996 Ultrason. Sonochem. 3163

    [12]

    Suslick K S, Neis U 1989 Scientific American 43 80

    [13]

    Bogdan N 2007 Ultrason. Sonochemi. 14 13

    [14]

    Wang P H 2003 J. Hebei Institute of Technology 14 13 (in Chinese) [王萍辉 2003 河北理工学院学报 25 154]

    [15]

    Edward B 1991 Science 253 1397

    [16]

    Dalt S D, Takimi A S, Volkmer T M, Sousa V C, Bergmann C P2011 Powder Technology 210 103

    [17]

    Hong X G, Du L C, Ye M P, Wong Y X 2004 Chin. Phys. 13 720

    [18]

    Yuan Y H, Hou X, Gao H 2006 Acta Phys. Sin. 55 446 (in Chinese) [袁艳红, 侯洵, 高恒 2006 物理学报 55 446]

计量
  • 文章访问数:  12128
  • PDF下载量:  640
  • 被引次数: 0
出版历程
  • 收稿日期:  2011-04-22
  • 修回日期:  2011-06-08
  • 刊出日期:  2012-03-15

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