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Sulfidation of Oxidized Copper Studied by Soft X-ray Spectroscopy

Published online by Cambridge University Press:  28 March 2012

H. M. Hollmark ,
P. G. Keech ,
J. R. Vegelius ,
P. Kristiansen ,
L. Werme  and
L.-C. Duda
H. M. Hollmark
Affiliation:
Department of Physics and Astronomy, Division of Molecular and Solid State Physics, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden.
P. G. Keech
Affiliation:
Nuclear Waste Management Organization, 22 St. Clair Avenue East, Sixth Floor, Toronto, Ontario, M4T 2S3 Canada.
J. R. Vegelius
Affiliation:
Department of Physics and Astronomy, Division of Molecular and Solid State Physics, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden.
P. Kristiansen
Affiliation:
Department of Physics and Astronomy, Division of Molecular and Solid State Physics, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden. Fritz-Haber-Institut der MPG, Faradayweg 4–6, D-14195 Berlin (Dahlem), Germany.
L. Werme
Affiliation:
Department of Physics and Astronomy, Division of Molecular and Solid State Physics, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden.
L.-C. Duda
Affiliation:
Department of Physics and Astronomy, Division of Molecular and Solid State Physics, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden.
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Abstract

Using soft X-ray spectroscopy, we have studied the reactions between Cu2O and CuO with an aqueous solution of 1mM Na2S. Exposure to dissolved sulfide for several hours clearly reduces Cu(II) to Cu(I) compounds. However, there are still strong oxygen signals in the spectra, indicating a more complex surface composition than simple copper sulfides.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1475: Symposium NW – Scientific Basis for Nuclear Waste Management XXXV , 2012 , imrc11-1475-nw35-o15
Copyright
Copyright © Materials Research Society 2012

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References

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