X-ray photoelectron spectra of magnetite nanopowders after chromium(VI) sorption from aqueous solutions |
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| Authors: | M V Kuznetsov O D Linnikov I V Rodina |
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| Affiliation: | 1.Institute of Solid State Chemistry, Ural Branch,Russian Academy of Sciences,Yekaterinburg,Russia |
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| Abstract: | Fe3O4 nanopowders prepared by three different procedures (vapor-phase synthesis, chemical precipitation from aqueous solutions,
and laser evaporation) have been characterized by X-ray photoelectron spectroscopy before and after chromium(VI) sorption
from aqueous solutions. The results demonstrate that, during sorption, the chromium is concentrated in the magnetite at a
level of several atomic percent, and its oxidation state is 3+. The mechanism of chromium sorption on magnetite particles
is discussed. |
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