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Solvothermal synthesis of nanocrystalline FeS2

  • Yanhua Chen
  • Yufeng Zheng
  • Xiaogang Zhang
  • Yanfei Sun
  • Youzhong Dong
Article

Abstract

This paper reports on the synthesis of the nanocrystalline FeS2 via a solvent-thermal process. Using FeSO4 and NH2CSNH2 as precursors and polyvinyl-pyrrolidone (PVP) as a protective agent (dispersant), we have successfully synthesized nanocrystalline FeS2 both under acidic conditions (pH = 5) and under alkali conditions (pH = 10) at various temperatures and for different time in alcohol-water solution. X-ray diffraction (XRD), Transmission electron microscopy (TEM) and Ultraviolet Visible (UV-VIS) spectroscopy were used to characterize the morphology, structure, particle size and optical characterization of sample synthesized under acidic condition, and the XRD pattern was refined by Rietveld method. The experimental result shows that nanocrystalline FeS2 with uniform size, highly crystallized quality and excellent dispersivity has been synthesized at 200 for 36 h.

Keywords

FeS2 (Pyrite) solvothermal PVP the Rietveld method 

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References

  1. 1.
    Ennaoui, A., Fiechter, S., Goslowsky, H. et al., Photoactive synthetic polycrystalline pyrite FeS2, J. Electro-chemical Society, 1985, 132(7): 1579–1582.CrossRefGoogle Scholar
  2. 2.
    Ferrer, I. J., Nevskaia, D. M., de las Heras, C. et al., About the band gap nature of FeS2 as determined from optical and photoelectrochemical measurements, Solid State Commun., 1990, 74(9): 913–916. [DOI]ADSCrossRefGoogle Scholar
  3. 3.
    Ennaoui, A., Fiechter, S., Pettenkofer, Ch. et al., Iron disulfide for solar energy conversion, Solar Energy Materials and Solar Cells, 1993, 29(4): 289–370. [DOI]CrossRefGoogle Scholar
  4. 4.
    Nakamura, S., Yamamoto, A., Electrodeposition of pyrite (FeS2) thin films for photovoltaic cells, Solar Energy Materials and Solar Cells, 2001, 65: 79–85. [DOI]CrossRefGoogle Scholar
  5. 5.
    Willeke, G., Blenk, O., Kloc, Ch. et al., Preparation and electrical transport properties of pyrite (FeS2) single crystals, J. Alloys and Compounds, 1992, 178: 181–191. [DOI]CrossRefGoogle Scholar
  6. 6.
    Yamamoto, A., Nakamura, M., Seki, A. et al., Pyrite (FeS2) thin films prepared by spray method using FeSO4 and (NH4)Sx, Solar Energy Materials & Solar Cells, 2003, 75: 451–456. [DOI]CrossRefGoogle Scholar
  7. 7.
    Meng, L., Liu, M. S., Thin pyrite (FeS2) films prepared by thermal-sulfurating iron films at various temperatures, Materials Science & Engineering B, 1999, 60: 168–172. [DOI]CrossRefGoogle Scholar
  8. 8.
    Shi, E. W., Xia, C. T., Wang, B. G. et al., The coalescence of hydrothermal ceramic powders, Science in China, Ser. E, 1997, 27(2): 126–133.Google Scholar
  9. 9.
    Wang, D. Q., Developments in preparation of nano-scale faction materials by solvothermal synthesis routs, Journal of Dezhou University, 2002, 18(2): 61–64.Google Scholar
  10. 10.
    Yu, S. H., Shu, L., Wu, Y. S. et al., Benzene thermal synthesis and characterization of ultrafine powders of antimony sulfide, Mater. Res. Bull., 1998, 33(8): 1207–1211. [DOI]CrossRefGoogle Scholar
  11. 11.
    Yao, J. X., Zhao, G. L., Han, G. R., Effect of different preparation condition on the quantum size effect of the CdS nanoparticles, Journal of Zhejiang University (Engineering Science), 2003, 37(4): 450–454.Google Scholar
  12. 12.
    Shi, E. W., Xia, C. T., Bu, C. G et al., Development and application of hydrothermal method, Journal of Inorganic Materials, 1996, 11(2): 193–206.Google Scholar
  13. 13.
    Xiao, Q., Qiu, G. Z., Tan, W. Q. et al., Density functional calculation of electronic structure and optical properties of FeS2 (pyrite), Acta Optica Sinica, 2002, 22(12): 1501–1506.Google Scholar
  14. 14.
    Dahman, H., Khalifa, M., Brunel, M. et al., Iron pyrite films prepared by sulfur vapor transport, Thin Solid Films, 1996, 280: 56–60. [DOI]ADSCrossRefGoogle Scholar
  15. 15.
    Wang, Y., Herron, N., Nanometer-sized semiconductor clusters: materials synthesis, quantum size effects, and photophysical properties, J. Phys. Chem., 1991, 95(2): 525–532. [DOI]CrossRefGoogle Scholar
  16. 16.
    Zhou, Q. F, Xu, Z., Bao, J. C. et al., Preparation of Ag nano-powder by reduction-protection method, Fine Chemicals, 2001, 18(1): 39–42.Google Scholar

Copyright information

© Science in China Press 2005

Authors and Affiliations

  • Yanhua Chen
    • 1
  • Yufeng Zheng
    • 1
  • Xiaogang Zhang
    • 2
  • Yanfei Sun
    • 1
  • Youzhong Dong
    • 1
  1. 1.Physics Department of Xinjiang UniversityUrumqiChina
  2. 2.Institute of Applied Chemistry of Xinjiang UniversityUrumqiChina

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