X-ray diffraction and Raman spectroscopic studies of Zn-substituted carrboydite-like compounds

Frost, Ray L., Lin, Yu-Hsiang, Kloprogge, J. Theo, Adebajo, Moses O., & Martens, Wayde N. (2006) X-ray diffraction and Raman spectroscopic studies of Zn-substituted carrboydite-like compounds. Materials Chemistry and Physics, 100(1), pp. 174-186.


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Hydrotalcite-like compounds of the formula NixZn6-xAl2(OH)16(SO4).4H2O where x varies from 0 to 6, equivalent to a zinc-substituted carrboydite have been synthesised and characterised by X-ray diffraction , electron microscopy and vibrational spectroscopy. Both the d(003) spacing and the crystallite size are a function of the amount of zinc replacement for nickel in the carrboydite-like compounds. Transmission electron microscopy shows the clay-like crystal structure of these hydrotalcite compounds. These compounds were characterised by vibrational spectroscopic techniques and a comparison made with the naturally occurring minerals. Additional bands in the sulphate antisymmetric stretching and bending region leads to the conclusion that the symmetry of the sulphate anion is reduced inferring the bonding of the sulphate anion to the hydrotalcite hydroxyl surface.

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ID Code: 5148
Item Type: Journal Article
Refereed: Yes
Additional Information: This manuscript is one of a series of papers on the study of hydrotalcites
Keywords: hydrotalcite, brucite, Raman microscopy, carrboydite, hydrohonessite, takovite, mountkeithite, X, ray diffraction
DOI: 10.1016/j.matchemphys.2005.12.028
ISSN: 0254-0584
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2006 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 06 Oct 2006 00:00
Last Modified: 21 Apr 2015 04:52

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