Journal
PHYSICS OF THE SOLID STATE
Volume 52, Issue 4, Pages 826-837Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063783410040268
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- Presidium of the Russian Academy of Sciences
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The state of iron in nanoparticles prepared by impregnating silica gel and aluminum oxide with iron(II) sulfate solutions has been investigated using Mossbauer spectroscopy. It has been revealed that the state of iron depends on the nature of the support. Iron(III) hydroxysulfate and iron(III) oxysulfate nanoparticles are formed on the surface of silica gel, and iron oxide nanoparticles are formed on the surface of aluminum oxide. An increase in the concentration of iron ions or in the size of iron-containing particles leads to hydration of the nanoparticle surface. The calcination of the samples results in the formation of E >-Fe2O3 oxide in a strongly disordered or amorphous state in iron-containing particles on the surface of silica gel.
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