Antimony and silicon environments in antimony silicate glasses
Mee, M., Davies, B. C., Orman, R. G., Thomas, M. F. and Holland, D.. (2010) Antimony and silicon environments in antimony silicate glasses. Journal of Solid State Chemistry, Vol.183 (No.9). pp. 1925-1934. ISSN 0022-4596Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.jssc.2010.06.014
Antimony silicate glasses, of general formula xSb(2)O(3)center dot (1 - x)SiO2 (0.1 <= x <= 0.78), have been prepared by melt-quenching and their structures studied using Si-29 MAS NMR spectroscopy, Sb-121 Mossbauer spectroscopy and Raman spectroscopy. Oxidation during melting gives rise to Sb5+ in concentrations, which increase linearly with x to give a value of similar to 10% when x=0.78. Sb-121 Mossbauer spectra show Mossbauer shifts and quadrupole splittings consistent with Sb3+ in a [:SbO3] trigonal pyramid, similar to that in crystalline Sb2O3. A broad band in the Raman spectrum at similar to 410 cm(-1) is due to the vibrations of such a unit. The dependence of the silicon Q '' speciation on x can be interpreted by the formation of Sb-O-Sb links possibly to form rings of 4 [:SbO3] units such as are found in valentinite. (C) 2010 Elsevier Inc. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QD Chemistry|
|Divisions:||Faculty of Science > Physics|
|Journal or Publication Title:||Journal of Solid State Chemistry|
|Number of Pages:||10|
|Page Range:||pp. 1925-1934|
|Access rights to Published version:||Restricted or Subscription Access|
|Funder:||Engineering and Physical Sciences Research Council (EPSRC)|
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