Facile Synthesis and Properties of Bifunctional Magnetic-Optical Fe₃O₄@ZnS Nanocomposites with Core-Shell Structure

Abstract:

Solvothermal synthesized monodisperse Fe₃O₄ nanoparticles have been encapsulated with zinc sulfide shell through a simple ultrasonic-assisted aqueous-phase method under ambient environment. The monodisperse magnetic cores with average diameter of 180 nm were coated with zinc sulfide shelles (20~60 nm), in order to achieve a core-shell structure with both magnetic and luminescent properties. Structure, morphology and size of products were investigated in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). The results display that the Fe₃O₄ cores have been coated with ZnS shells Magnetic and optical properties of the nanocomposites were measured with vibrating sample magnetometer (VSM) and photoluminescence (PL) spectroscopy. Magnetic study reveals reduction of the saturation magnetization (Ms) for Fe₃O₄@ZnS nanocomposites compared with uncoated Fe₃O₄ nanoparticles. Room temperature PL spectrum of the Fe₃O₄@ZnS samples shows two emission bands occurred at 389 and 292 nm, respectively. The bifunctional magentic-Optical materials can be used in biomedicine. Keywords: Fe₃O₄; ZnS; core-shell structure; nanocomposites

• Periodical: Applied Mechanics and Materials (Volume 320)
• Pages: 92-98
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.320.92
• Online since: May 2013
• Authors: Dan Zhang, Guan Hua Gao, Wei Ma, Jian Yu Zhu, Guan Zhou Qiu, Xiao He Liu
• Keywords: Core-Shell Structure, Fe₃O₄, Nanocomposite, ZnS

References

[1] Z. X. Wang, L. M. Wu, M. Chen, S. X. Zhou, "Facile synthesis of superparamagnetic fluorescent Fe3O4/ZnS hollow nanospheres," J. Am.Chem. Soc., Vol. 131, pp.11276-11277, April 2009.

DOI: 10.1021/ja903246e

[2] X. G. Yu, J. Q. Wan, Y. Shan, K. Z. Chen, X. D. Han, "A facile approach to fabrication of bifunctional magnetic-optical Fe3O4@ZnS microspheres," J. Chem. Mater., Vol. 21, pp.4892-4898, July 2009.

DOI: 10.1021/cm902667b

[3] S. Park, J. Jun, H. W. Kim, C. Lee, "Preparation of one dimensional Bi2O3-core/ZnO-shell structures by thermal evaporation and atomic layer deposition," Solid State Commun., Vol. 149, pp.315-318, May 2009.

DOI: 10.1016/j.ssc.2008.11.037

[4] Y. F. Zhu, Y. Fang, S. J. Kaskel, "Folate-Conjugated Fe3O4@SiO2 hollow mesoporous spheres for targeted anticancer drug delivery," J. Phys. Chem. C, Vol 114, pp.16382-16388, August 2010.

DOI: 10.1021/jp106685q

[5] Z. R. Shen, Y. Matsuki, K. Higashimine, M. Miyake, T. Shimado, "Formation of porous Pt nanoparticles through coreshell PtAl nanoalloys and wet chemical etching," Chem. Lett., Vol 41, pp.644-646, March 2012.

DOI: 10.1246/cl.2012.644

[6] Y. Zhang, S. Pan, X. Teng, Y. Luo, G. Li, "Bifunctional magnetic−luminescent nanocomposites: Y2O3/Tb nanorods on the surface of iron oxide/silica core−shell nanostructures," J. Phys. Chem. C, Vol 112, pp.9623-9627, April 2008.

DOI: 10.1021/jp8015326

[7] J. Kim, J. E. Lee, J. Lee, J. H. Yu, B. C. Kim, K. An, Y. Hwang, C. H. Shin, J. G. Park, J. Kim, T. Hyeon, "Magnetic fluorescent delivery vehicle using uniform mesoporous silica spheres embedded with monodisperse magnetic and semiconductor nanocrystals," J. Am. Chem. Soc., Vol 128, pp.688-689, September 2006.

DOI: 10.1021/ja0565875

[8] L. Z. Tong, J. H. Shi, D. M. Liu, Q. H. Li, H. Yang, "Luminescent and magnetic properties of Fe3O4@SiO2@Y2O3:Eu3+ composites with core-shell structure," J. Phys. Chem. C, Vol. 116, pp.7153-7157, February 2012.

[9] R. Freeman, X .Q. Liu, I. Willner, "Chemiluminescent and chemiluminescence resonance energy transfer (CRET) detection of DNA, metal ions, and aptamer–substrate complexes using hemin/G-quadruplexes and CdSe/ZnS quantum dots," J. Am, Chem. Soc., Vol. 133, pp.11597-11604, August 2011.

DOI: 10.1021/ja202639m

[10] H. Kim, M. Achermann, L. P. Balet, J. A. Hollingsworth, V. I. Klimov, "Synthesis and characterization of Co/CdSe core/shell nanocomposites:  bifunctional magnetic-optical nanocrystals," J. Am. Chem. Soc., Vol. 127, pp.544-546, May 2004.

DOI: 10.1021/ja047107x

[11] D. M. Liu, L. Z. Tong, J. H. Shi, X. W. Yang, H. Yang, "Synthesis and properties of Fe/Fe3O4 nanocomposites coated with ZnS," J. Mater.sci., Vol. 23, pp.464-467, June 2012.

DOI: 10.1007/s10854-011-0417-7

[12] J. B. Sambur, B. A. Parkinson, "CdSe/ZnS core/shell quantum dot sensitization of low index TiO2 single crystal surfaces," J. Am. Chem.Soc., Vol. 132, pp.2130-2131, November 2010.

DOI: 10.1021/ja9098577

[13] B. Liu, D. P. Wang, W. H. Huang, M. J. Yu, A. H. Yao, "Fabrication of nanocomposite particles with superparamagnetic and luminescent functionalities," Mater. Res. Bull., Vol. 43, pp.2904-2911, December 2008.

DOI: 10.1016/j.materresbull.2007.12.006

[14] (a) H. Bala, Y. H. Yu, X. X. Cao, W. Y. Fu, "Preparation and characterization of nickel/zinc sulphide: bifunctional magnetic-optical nanocomposites," Mater. Chem. Phys., Vol 111, pp.50-53, March 2008. (b) H. Bala, W. Y. Fu, Y. H. Yu, H. B. Yang, Y. S. Zhang, "Preparation, optical properties, magnetic properties and thermal stability of core–shell structure cobalt/zinc oxide nanocomposites," Appl. Srf. Sci., Vol. 225, pp.4050-4055, November 2009.

DOI: 10.1016/j.apsusc.2008.10.119

[15] C. B. Murray, C. R. Kagan, M. G. Bawendi, "Synthesis and characterization of monodisperse nanocrystals and close-packed nanocrystal assemblies," Annu. Rev. Mater. Res., Vol. 30, pp.545-610, August 2000.

DOI: 10.1146/annurev.matsci.30.1.545

[16] X. S. Fang, L. M. Wu, L. F. Hu, "ZnS nanostructure arrays: a developing material star," Adv. Mater., Vol. 23, pp.585-598, February 2011.

DOI: 10.1002/adma.201003624

[17] J. P. Bai, J. M. Wang, "High-magnetic-moment core-shell-type FeCo–Au/Ag nanoparticles," Appl. Phys. Lett., Vol. 87, pp.152502-3, October 2005.

DOI: 10.1063/1.2089171

[18] V. V. Shchennikov, S. V. Ovsyannikov, A. E. Karkin, S. Todo, Y. Uwatoko, "Galvanomagnetic properties of fast neutron bombarded Fe3O4 magnetite: A case against charge ordering mechanism of the Verwey transition," Solid State Commun., Vol. 149, pp.759-762, March 2009.

DOI: 10.1016/j.ssc.2009.03.002

[19] S. J. Guo, D. Li, L. X. Zhang, J. Li, E. K. Wang, "Monodisperse mesoporous superparamagnetic singlecrystal magnetite particles for drug delivery," Biomater., Vol. 30, pp.1881-1889, November 2009.

DOI: 10.1016/j.biomaterials.2008.12.042

[20] D. S. Ling, W. Park, Y. I. Park, N. Lee, F. Y. Li, C. Y. Song, S. G. Yang, S. H. Choi, , K. Na, T. Hyeon, "Multiple-interaction ligands inspired by mussel adhesive protein: synthesis of highly stable and biocompatible nanoparticles," Angew. Chem. Int. Ed., Vol 50, pp.11360-11365, September 2011.

DOI: 10.1002/anie.201101521

[21] A. G. Yan, X. H. Liu, G. Z. Qiu, H. Y. Wu, R. Yi, N. Zhang, J. Xu, "Solvothermal synthesis and characterization of size-controlled Fe3O4 nanoparticles," J. Alloys Compd., Vol 458, pp.487-491, June 2008.

DOI: 10.1016/j.jallcom.2007.04.019

[22] F. Sauzedde, A. laÏssari, C. Pichot, "Hydrophilic magnetic polymer latexes. 1. Adsorption of magnetic iron oxide nanoparticles onto various cationic latexes," Colloid Polym. Sci., Vol 277, pp.846-855, April 1999.

DOI: 10.1007/s003960050461

[23] L. Wang, J. H. Dai, X. Z. Liu, Z. B. Zhu, X. Huang, P. W. Wu, "Morphology-controlling synthesis of ZnS through a hydrothermal/solvthermal method," Ceram. Int., Vol 38, pp.1873-1878, September 2012.

DOI: 10.1016/j.ceramint.2011.10.013

[24] H. Soni, M. Chawda, D. Bodas, "Electrical and optical characteristics of Ni doped ZnS clusters," Mater. Lett., Vol 63, pp.767-769, January 2009.

DOI: 10.1016/j.matlet.2008.12.052

[25] Y. D. Li, Y. Ding, Y. Zhang, Y. T. Qia, "Photophysical properties of ZnS quantum dots," J. Phys. Chem. Solids, Vol 60, pp.13-15, January 1999.