Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/6073
Title: A vibrational spectroscopic study of the phosphate mineral vantasselite Al4(PO4)3(OH)3 9H2O.
Authors: Frost, Ray Leslie
Cipriano, Ricardo Augusto Scholz
Belotti, Fernanda Maria
López, Andrés
Theiss, Frederick L.
Keywords: Vantasselite
Phosphate
Raman spectroscopy
Infrared spectroscopy
Issue Date: 2015
Citation: FROST, R, L. et al. A vibrational spectroscopic study of the phosphate mineral vantasselite Al4(PO4)3(OH)3 9H2O. Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, v. 147, p. 185-192, 2015. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1386142515004059>. Acesso em: 08 set. 2015.
Abstract: We have studied the phosphate mineral vantasselite Al4(PO4)3(OH)3 9H2O using a combination of SEM with EDX and Raman and infrared spectroscopy. Qualitative chemical analysis shows Al, Fe and P. Raman bands at 1013 and 1027 cm 1 are assigned to the PO43 m1 symmetric stretching mode. The observation of two bands suggests the non-equivalence of the phosphate units in the vantasselite structure. Raman bands at 1051, 1076 and 1090 cm 1 are attributed to the PO43 m3 antisymmetric stretching vibration. A comparison is made with the spectroscopy of wardite. Strong infrared bands at 1044, 1078, 1092, 1112, 1133, 1180 and 1210 cm 1 are attributed to the PO4 3 m3 antisymmetric stretching mode. Some of these bands may be due to dAl2OH deformation modes. Vibrational spectroscopy offers a mechanism for the study of the molecular structure of vantasselite.
URI: http://www.repositorio.ufop.br/handle/123456789/6073
metadata.dc.identifier.doi: https://doi.org/10.1016/j.saa.2015.03.090
ISSN: 1386-1425
metadata.dc.rights.license: O periódico Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3727590061502.
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