Chemical activity of silver nanoparticles in anion-exchange matrices with respect to molecular oxygen dissolved in water |
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| Authors: | E. S. Kipriyanova T. A. Kravchenko D. V. Konev A. I. Kalinichev W. H. Hoell |
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| Affiliation: | 1.Voronezh State University,Voronezh,Russia;2.Frumkin Institute of Physical Chemistry and Electrochemistry,Russian Academy of Sciences,Moscow,Russia;3.Institute of Technical Chemistry,Karlsruhe,Germany |
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| Abstract: | New silver-containing nanocomposites different in their dispersity of metal were synthesized on the basis of strongly and weakly basic anion-exchange resins. The chemical activity of the nanocomposites with respect to oxygen dissolved in water was investigated. It was shown that silver nanoparticles in samples based on strongly basic anion exchangers and weakly basic anion exchangers in the NO 3 ? salt form are not oxidized by oxygen; for weakly basic matrices in the free amine form, this process occurs to only a small extent. The resistance to oxygen is explained by inhibition of processes of formation of silver oxides. Nanocomposites based on strongly basic anion-exchange resins are recommended for testing as to catalytic activity. |
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