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Synthesis and crystal structure of Co2(OH)2CO3 by Rietveld method

  • Shunli Wang (a1), Guanglie Lü (a1) and Weihua Tang (a1)

Abstract

A new cobalt hydroxide carbonate Co2(OH)2CO3 was successfully synthesized by a hydrothermal method. The compound is isomorphous with malachite [Cu2(OH)2CO3] and crystallizes in a monoclinic system [space group P21/a (No. 14); a=9.448(5) Å, b=12.186(9) Å, c=3.188(4) Å, β=98.593°, V=367.143(9) Å3, Z=4, and Dc=3.786(9) g/cm3]. Crystal structure of Co2(OH)2CO3 was refined by the Rietveld method with RP=4.3%, RWP=5.7%, Rexp=5.1%, RB=1.74%, and S=1.117 on the basis of the X-ray powder diffraction data. The crystal structure of Co2(OH)2CO3 obtained by the Rietveld refinement shows that all species Co2+, CO32−, and OH ions occupy C1 site symmetry. Two crystallographically different Co2+ and OH ions and one type CO32− ion exist in the lattice. Co(1) is coordinated to two oxygen atoms from CO32− ions and two OH ions; Co(2) is coordinated to two oxygen atoms from CO32− ions and four OH ions, thus forming a distorted octahedron with (4+2) coordination.

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Corresponding author

a)Author to whom correspondence should be addressed.
b)Electronic mail: slwang@zstu.edu.cn
c)Electronic mail: whtang@zstu.edu.cn

References

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Ando, M., Kobayashi, T., Lijima, S., and Haruta, M. (1997). “Optical recognition of CO and H2 by use of gas-sensitive Au-Co3O4 composite films,” J. Mater. Chem.JMACEP 7, 17791783.10.1039/a700125h
García-Martínez, O., Millan, P., Rojas, R. M., and Torralvo, M. J. (1988). “Cobalt basic salts as inorganic precursors of cobalt oxides and cobalt metal: Thermal behaviour dependence on experimental conditions,” J. Mater. Sci.JMTSAS 23, 13341350.10.1007/BF01154598
Hosono, E., Fujihara, S., Honma, I., and Zhou, H. (2005). “Fabrication of morphology and crystal structure controlled nanorod and nanosheet cobalt hydroxide based on the difference of oxygen-solubility between water and methanol, and conversion into Co3O4,” J. Mater. Chem.JMACEP 15, 19381945.10.1039/b418955h
Kim, M. G., Dahmen, U., and Searcy, A. W. (1988). “Shape and size of crystalline MgO particles formed by the decomposition of Mg(OH)2,” J. Am. Ceram. Soc.JACTAW 71, C-373C-375.10.1111/j.1151-2916.1988.tb06395.x
Llorca, J., Piscina, P. R., Dalmon, J. A., and Homs, H. (2004). “Transformation of Co3O4 during ethanol steam-reforming activation process for hydrogen production,” Chem. Mater.CMATEX 16, 35733578.10.1021/cm049311p
Lorenz, M. and Kempe, G. (1984). “Thermoanalysis of basic cobalt carbonate,” J. Therm. Anal.JTHEA9 29, 581588.10.1007/BF01913467
Lutterotti, L., Matthies, S., Wenk, H. R., Schultz, A. J., and Richardson, J. (1997). “Texture and structure analysis of deformed limestone from neutron diffraction spectra,” J. Appl. Phys.JAPIAU 81, 594600.10.1063/1.364220
Materials Data, Inc. (1998). JADE 5.0, XRD pattern processing (computer software) ⟨http://www.materialsdata.com/⟩.
McKelvy, M. J., Sharma, R., Chizmeshya, A. V. G., Carpenter, R. W., and Streib, K. (2001). “Magnesium hydroxide dehydroxylation: In situ nanoscale observations lamellar nucleation and growth,” Chem. Mater.CMATEX 13, 921926.10.1021/cm000676t
Porta, P., Dragone, R., Fierro, G., Inversi, M., Lojacono, M., and Moretti, G. (1992). “Preparation and characterisation of cobalt-copper hydroxysalts and their oxide products of decomposition,” J. Chem. Soc., Faraday Trans.JCFTEV 88, 311314.10.1039/ft9928800311
Rietveld, H. M. (1967). “Line profile of neutron powder diffraction peaks for structure refinement,” Acta Crystallogr.ACSEBH 22, 151152.10.1107/S0365110X67000234
Robert, R., Romer, S., Reller, A., and Weidenkaff, A. (2005). “Nanostructured complex cobalt oxides as potential materials for solar thermoelectric power generators,” Adv. Eng. Mater.AENMFY 7, 303308.10.1002/adem.200500043
Smith, G. S. and Snyder, P. L. (1979). “F N: A criterion for rating powder diffraction patterns and evaluating the reliability of powder-pattern indexing,” J. Appl. Crystallogr.JACGAR 12, 6065.10.1107/S002188987901178X
Stoilova, D., Koleva, V., and Vassileva, V. (2002). “Infrared study of some synthetic phases of malachite (Cu2(OH)2CO3)-hydrozincite (Zn5(OH)6(CO3)2) series,” Spectrochim. Acta, Part ASAMCAS 58, 20512059.10.1016/S1386-1425(01)00677-1
Wang, S. L., Qian, L. Q., Xu, H., , G. L., Dong, W. J., and Tang, W. H. (2009). “Synthesis and structural characterization of cobalt hydroxide carbonate nanorods and nanosheets,” J. Alloys Compd.JALCEU 476, 739743.10.1016/j.jallcom.2008.09.096
Wang, Y. X., Zhang, Y. J., Cao, Y. M., Lu, M., and Yang, J. H. (2008). “Properties of exchange biased Co/Co3O4 bilayer films,” J. Alloys Compd.JALCEU 450, 128130.10.1016/j.jallcom.2007.05.030
Xu, R. and Zeng, H. C. (2003). “Dimensional control of cobalt-hydroxide-carbonate nanorods and their thermal conversion to one-dimensional arrays of Co3O4 nanoparticles,” J. Phys. Chem. BJPCBFK 107, 1264312649.10.1021/jp035751c
Yuan, Z. Y., Huang, F., Feng, C. Q., Sun, J. T., and Zhou, Y. H. (2003). “Synthesis and electrochemical performance of nanosized Co3O4,” Mater. Chem. Phys.MCHPDR 79, 14.10.1016/S0254-0584(02)00442-X
Zhao, Z. G., Geng, F. X., Bai, J. B., and Cheng, H. M. (2007). “Facile and controlled synthesis of 3D nanorods-based urchinlike and nonosheets-based flowerlike cobalt basic salt nanostructures,” J. Phys. Chem. CJPCCCK 111, 38483852.10.1021/jp067320a
Zigan, F., Joswig, W., Schuster, H. U., and Mason, S. A. (Report No. 100150) (1977). “Verfeinerung der Struktur von MalachitCu2(OH)2CO3, durch Neutronenbenbeugung,” Zeit. Krist. 145, 412426.

Keywords

Synthesis and crystal structure of Co2(OH)2CO3 by Rietveld method

  • Shunli Wang (a1), Guanglie Lü (a1) and Weihua Tang (a1)

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