Local hydrated structure of an Fe2+/Fe3+ aqueous solution: an investigation using a combination of molecular dynamics and X-ray absorption fine structure methods

  • The hydrated shell of both Fe2+ and Fe3+ aqueous solutions are investigated by using the molecular dynamics (MD) and X-ray absorption structure (XAS) methods. The MD simulations show that the first hydrated shells of both Fe2+ and Fe3+ are characterized by a regular octahedron with an Fe-O distance of 2.08Å for Fe2+ and 1.96Å for Fe3+, and rule out the occurrence of a Jahn-Teller distortion in the hydrated shell of an Fe2+ aqueous solution. The corresponding X-ray absorption near edge fine structure (XANES) calculation successfully reproduces all features in the XANES spectra in Fe2+ and Fe3+ aqueous solution. A feature that is located at energy 1 eV higher than the white line (WL) in an Fe3+ aqueous solution may be assigned to the contribution of the charge transfer.
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  • [1] Weare H. Rev. Mineral, 1987, 17: 143[2] Hochella F, Lower K, Maurice A et al. Science, 2008, 319: 1631[3] Kerisit S, Cooke J, Spagnoli D et al. J. Mater. Chem., 2005, 15: 1454[4] Spagnoli D, Cooke J, Kerisit S et al. J. Mater. Chem., 2006, 16: 1997[5] Valiev M, Kawai R, Adams A et al. J. Am. Chem. Soc., 2003, 125: 9926[6] Valiev M, YANG J, Adams A et al. J. Phys. Chem. B, 2007, 111: 13455[7] Clark L, Hobart E, Neu P. Chem. Rev., 1995, 95: 25[8] Franca F, Maurizio P, Alessandro T et al. Chemical Physics Letters, 1992, 199: 518[9] Tawun R, Bernd R. J. Phys. Chem. A, 2003, 107: 2324[10] Jarzecki A, Anbar D, Spiro G. J. Phys. Chem. A, 2004, 108: 2726[11] Tomasi J, Persico M. Chem. Rev., 1994, 94: 2027[12] Cossi M, Barone V, Cammi R. Chem. Phys. Lett., 1996, 255: 327[13] McWeeny R, Dierksen G. J. Chem. Phys., 1968, 49: 4852[14] Hay J, Wadt R. J. Chem. Phys., 1985, 82: 270[15] Wadt R, Hay J. J. Chem. Phys., 1985, 82: 284[16] Woon E et al. J. Chem. Phys., 1993, 98: 1358[17] Kendall A et al. J. Chem. Phys., 1992, 96: 6796[18] Giovanni C, Paola A, Nicolae P et al. J. Am. Chem. Soc., 2002, 124: 1968[19] Berendsen C, Van D, Van R. Comput. Phys. Commun., 1995, 95: 43[20] Darden T, York D, Pedersen L. J. Chem. Phys., 1993, 98: 10089[21] Berendsen C, Postma M, Van F et al. J. Comput. Phys., 1984, 81: 3684[22] Ankudinov L, Ravel B, Rehr J. Phys. Rev. B, 1998, 58: 7565[23] Rehr J, Ankudinov L. Coord. Chem., 2005, 249: 131[24] Joly Y. Phys. Rev. B, 1996, 53: 13029[25] Paola A, Roscioni M, Chillemi G et al. J. Am. Chem. Soc., 2006, 128: 1853
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YE Qing, CHEN Xing, ZHOU Jing, ZHAO Hai-Feng, CHU Wang-Sheng, ZHENG Xu-Sheng and WU Zi-Yu. Local hydrated structure of an Fe2+/Fe3+ aqueous solution: an investigation using a combination of molecular dynamics and X-ray absorption fine structure methods[J]. Chinese Physics C, 2013, 37(3): 038003. doi: 10.1088/1674-1137/37/3/038003
YE Qing, CHEN Xing, ZHOU Jing, ZHAO Hai-Feng, CHU Wang-Sheng, ZHENG Xu-Sheng and WU Zi-Yu. Local hydrated structure of an Fe2+/Fe3+ aqueous solution: an investigation using a combination of molecular dynamics and X-ray absorption fine structure methods[J]. Chinese Physics C, 2013, 37(3): 038003.  doi: 10.1088/1674-1137/37/3/038003 shu
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Received: 2012-04-27
Revised: 2012-08-14
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Local hydrated structure of an Fe2+/Fe3+ aqueous solution: an investigation using a combination of molecular dynamics and X-ray absorption fine structure methods

    Corresponding author: CHEN Xing,
    Corresponding author: WU Zi-Yu,

Abstract: The hydrated shell of both Fe2+ and Fe3+ aqueous solutions are investigated by using the molecular dynamics (MD) and X-ray absorption structure (XAS) methods. The MD simulations show that the first hydrated shells of both Fe2+ and Fe3+ are characterized by a regular octahedron with an Fe-O distance of 2.08Å for Fe2+ and 1.96Å for Fe3+, and rule out the occurrence of a Jahn-Teller distortion in the hydrated shell of an Fe2+ aqueous solution. The corresponding X-ray absorption near edge fine structure (XANES) calculation successfully reproduces all features in the XANES spectra in Fe2+ and Fe3+ aqueous solution. A feature that is located at energy 1 eV higher than the white line (WL) in an Fe3+ aqueous solution may be assigned to the contribution of the charge transfer.

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