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We prepared the magnetic nanoparticles of Fe3O4from thermal decomposition of the Fe oleates precursors synthesized by iron chlorides and sodium oleate,and the SiO2-coated Fe3O4nanoparticles by combining the reverse microemulsion and organic template methods. FTIR was adopted to investigate the surface of Fe oleate under different treatments,and the growth of Fe3O4 nanoparticles with different reactant concentrations of oleic acid and heating rates. The results indicated that the superficial oleic acid of the waxy solid Fe oleates after extraction from ethanol and acetone was partially removed,which impairs the formation of monodispersion Fe3O4 naoparticles. The effect of heating rate on the growth of nanoparticles was weak compared with that of the concentration of Fe oleates. When the concentration of oleic acid is 0.09 mol/L, a characteristic peak of Fe3O4 at 576 cm-1(assignable to the bending vibrations of Fe-O) is enhanced significantly. The XRD (X-ray diffraction) spectra,TEM (transmission electron microscopy) images and SQUID (superconducting quantum interference device) confirmed that the Fe3O4 nanoparticles are spinel cubic crystal and have a good monodispersity and super-paramagnetism. Whats more,the TEM of SiO2-coated Fe3O4 nanoparticles also confirmed that the Fe3O4 nanoparticles were well coated by mesoporous SiO2.
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Keywords:
- Fe3O4 nanoparticles /
- mesoporous SiO2 coating /
- reverse microemulsion /
- Fe oleates
[1] Yu D L, Du Y W 2005 Acta Phys. Sin. 54 930 (in Chinese) [于冬亮、 都有为 2005 物理学报 50 2775]
[2] Meldrum F C, Heywood B R, Mann S 1992 Science 257 522
[3] 52 3130 (in Chinese) [何志巍、 甄聪棉、 兰 伟、 王印月 2003 物理学报 52 3130]
[4] Yang J H, Ma S C, Xu Y 2008 Chin. Phys. B 17 1674
[5] Wang J Z, Fang Q Q 2004 Acta Phys. Sin. 53 3186 (in Chinese) [汪金芝、 方庆清 2004 物理学报 53 3186]
[6] Ao Q, Zhang W L 2007 Acta Phys. Sin. 56 1135 (in Chinese) [敖 琪、 张瓦利 2007 物理学报 56 1135]
[7] Zhang H, Liu X 2009 Acta Phys. Sin. 58 4970 (in Chinese) [张 弘、 刘 曦 2009 物理学报 58 4970]
[8] Jaiswal J K, Mattoussi H, Matthew Mauro J, Simon S M 2003 Nat. Biotechnol. 21 47
[9] Sun S, Murray C B, Weller D, Folks L, Moser A 2000 Science 287 1989
[10] Harisinghani M G, Barentsz J, Hahn P F 2003 Engl. J. Med. 348 2491
[11] Jordan A,Scholz R,Wust P 1999 J. Magn. Magn. Mater. 194 185
[12] Souza K C, Mohallem N D S, Sousa E M B 2010 J. Sol-Gel. Sci. Technol. 53 418
[13] Kim J, Lee J E, Lee J 2006 J. Am. Chem. Soc. 128 688
[14] He Z W, Zhen C M, Lan W, Wang Y Y 2003 Acta Phys. Sin.
[15] Li S F, Wang T, Wang Y 2005 Acta Phys. Sin. 54 3100 (in Chinese) [李发伸、王 涛、王 颖 2005 物理学报 54 3100]
[16] López-Quintela M A, Rivas J 1993 J. Colloid Interface Sci. 158 446
[17] Xu J, Yang H B, Fu W Y 2007 J. Magn. Magn. Mater. 309 307
[18] Park J, An K, Hwang Y 2004 Nat. Mater. 3 891
[19] Lu Y, Yin Y D, Mayers B T, Xia Y N 2002 Nano Lett. 2 183
[20] Yi D K, Selvan T, Lee S S 2005 J. Am. Chem. Soc. 127 4990
[21] Bronstein L M, Huang X L, Retrum J 2007 Chem. Mater. 19 3624
[22] Lin C L, Lee C F, Chiu W Y 2005 J. Colloid Interface Sci. 291 411
[23] Sederlind F, Pedersen H 2005 J. Colloid Interface Sci. 288 140
[24] Zhang L, He R, Gu H C 2006 App. Surf. Sci. 253 2611
[25] Tao K, Dou H J, Sun K 2006 Chem. Mater. 18 5273
[26] Waldron R D 1955 Phys. Rev. 99 1727
[27] Wu H X, Wang T J, Jin Y 2007 Ind. Eng. Chem. Res. 46 761
[28] Boutonnet M, Kizling J, Stenius P, Maire G 1982 Colloids Surf. 5 209
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[1] Yu D L, Du Y W 2005 Acta Phys. Sin. 54 930 (in Chinese) [于冬亮、 都有为 2005 物理学报 50 2775]
[2] Meldrum F C, Heywood B R, Mann S 1992 Science 257 522
[3] 52 3130 (in Chinese) [何志巍、 甄聪棉、 兰 伟、 王印月 2003 物理学报 52 3130]
[4] Yang J H, Ma S C, Xu Y 2008 Chin. Phys. B 17 1674
[5] Wang J Z, Fang Q Q 2004 Acta Phys. Sin. 53 3186 (in Chinese) [汪金芝、 方庆清 2004 物理学报 53 3186]
[6] Ao Q, Zhang W L 2007 Acta Phys. Sin. 56 1135 (in Chinese) [敖 琪、 张瓦利 2007 物理学报 56 1135]
[7] Zhang H, Liu X 2009 Acta Phys. Sin. 58 4970 (in Chinese) [张 弘、 刘 曦 2009 物理学报 58 4970]
[8] Jaiswal J K, Mattoussi H, Matthew Mauro J, Simon S M 2003 Nat. Biotechnol. 21 47
[9] Sun S, Murray C B, Weller D, Folks L, Moser A 2000 Science 287 1989
[10] Harisinghani M G, Barentsz J, Hahn P F 2003 Engl. J. Med. 348 2491
[11] Jordan A,Scholz R,Wust P 1999 J. Magn. Magn. Mater. 194 185
[12] Souza K C, Mohallem N D S, Sousa E M B 2010 J. Sol-Gel. Sci. Technol. 53 418
[13] Kim J, Lee J E, Lee J 2006 J. Am. Chem. Soc. 128 688
[14] He Z W, Zhen C M, Lan W, Wang Y Y 2003 Acta Phys. Sin.
[15] Li S F, Wang T, Wang Y 2005 Acta Phys. Sin. 54 3100 (in Chinese) [李发伸、王 涛、王 颖 2005 物理学报 54 3100]
[16] López-Quintela M A, Rivas J 1993 J. Colloid Interface Sci. 158 446
[17] Xu J, Yang H B, Fu W Y 2007 J. Magn. Magn. Mater. 309 307
[18] Park J, An K, Hwang Y 2004 Nat. Mater. 3 891
[19] Lu Y, Yin Y D, Mayers B T, Xia Y N 2002 Nano Lett. 2 183
[20] Yi D K, Selvan T, Lee S S 2005 J. Am. Chem. Soc. 127 4990
[21] Bronstein L M, Huang X L, Retrum J 2007 Chem. Mater. 19 3624
[22] Lin C L, Lee C F, Chiu W Y 2005 J. Colloid Interface Sci. 291 411
[23] Sederlind F, Pedersen H 2005 J. Colloid Interface Sci. 288 140
[24] Zhang L, He R, Gu H C 2006 App. Surf. Sci. 253 2611
[25] Tao K, Dou H J, Sun K 2006 Chem. Mater. 18 5273
[26] Waldron R D 1955 Phys. Rev. 99 1727
[27] Wu H X, Wang T J, Jin Y 2007 Ind. Eng. Chem. Res. 46 761
[28] Boutonnet M, Kizling J, Stenius P, Maire G 1982 Colloids Surf. 5 209
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