Abstract
The morphology and thermodynamic characteristics of nanostructures formed as a result of the reduction of the selenium ion in a selenite-ascorbate redox system in water solutions of polymethacrylic acid were studied by molecular optics and atomic-force microscopy. The dependence of the morphology of the selenium-containing nanostructures on the mass selenium-to-polymer ratio (ν) in solution was determined. It was established that a large number of macromolecules (up to 4300) is adsorbed on the selenium nanoparticles, leading to the formation of nanostructures with super-high molecular mass and an almost spherical form. It was shown that the density of the nanostructures, as calculated on the basis of the experimental data on the size and molecular mass of the nanocomposite, depends substantially on the selenium concentrations in the solution. The thermodynamic state of the solutions of nanostructures is described.
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Original Russian Text © S.V. Valueva, L.N. Borovikova, M.E. Vylegzhanina, T.E. Sukhanova, 2010, published in Zhurnal Fizicheskoi Khimii, 2010, Vol. 84, No. 9, pp. 1619–1623.
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Valueva, S.V., Borovikova, L.N., Vylegzhanina, M.E. et al. Morphology and thermodynamic characteristics of selenium-containing nanostructures based on polymethacrylic acid. Russ. J. Phys. Chem. 84, 1473–1477 (2010). https://doi.org/10.1134/S0036024410090037
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DOI: https://doi.org/10.1134/S0036024410090037