Redox reactions of arabinogalactan with silver ions and formation of nanocomposites
Lyudmila A. GrishchenkoFavorskii Irkutsk Institute of Chemistry, Siberian Division, Russian Academy of Sciences, ul. Favorskogo 1, Irkutsk, 664033, RussiaС. А. МедведеваFavorskii Irkutsk Institute of Chemistry, Siberian Division, Russian Academy of Sciences, ul. Favorskogo 1, Irkutsk, 664033, RussiaГ. П. АлександроваFavorskii Irkutsk Institute of Chemistry, Siberian Division, Russian Academy of Sciences, ul. Favorskogo 1, Irkutsk, 664033, RussiaЛ. П. ФеоктистоваVinogradov Irkutsk Institute of Geochemistry, Siberian Division, Russian Academy of Sciences, Irkutsk, RussiaА. Н. СапожниковVinogradov Irkutsk Institute of Geochemistry, Siberian Division, Russian Academy of Sciences, Irkutsk, RussiaБ. Г. СуховFavorskii Irkutsk Institute of Chemistry, Siberian Division, Russian Academy of Sciences, ul. Favorskogo 1, Irkutsk, 664033, RussiaБ.А. ТрофимовFavorskii Irkutsk Institute of Chemistry, Siberian Division, Russian Academy of Sciences, ul. Favorskogo 1, Irkutsk, 664033, Russia
2006en
ABI
Annotatsiya
Formation of silver nanoparticles in the course of chemical reduction of AgNO3 with arabinogalactan in aqueous alkaline solution was studied by electronic absorption spectroscopy and X-ray diffraction analysis. The pH of the solution was found to be the major factor affecting the degree of reduction of Ag+ ions. The probable reaction mechanism was discussed. Composites containing up to 58% Ag, with the metal particle size of 7–16 nm, were prepared. The nanoparticle size can be controlled by varying the reactant ratio AgNO3: arabinogalactan. Chemical modification of arabinogalactan was confirmed by IR and 13C NMR spectroscopy and by TLC.
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