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Features of the sol-gel process of formation of nanostructured gadolinium oxide

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Abstract

The process of dehydration of Gd(OH)3·nH2O obtained by the sol-gel method from a solution of Gd(NO3)3, to Gd2O3 in the temperature range of 50–700°C was explored. The hydrogel and Gd2O3 structurization is shown to depend on the additives (AF-12 and 2-propanol). The final average particle size of Gd2O3 after annealing at 700°C is 20±2 nm, depending on the conditions of the synthesis. The resulting oxide particles are larger than the particles of yttrium oxide Y2O3 (17±2) obtained under the same conditions of the process due to the higher basicity of gadolinium and its higher coordination number with respect to the OH groups. This promotes the formation of crystalline phases of Gd(OH)3 at lower temperature, 50–250°C, while maintaining a favorable structural short-range order in passing through an amorphous state to a crystalline Gd2O3.

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Authors and Affiliations

  1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 3, Novosibirsk, 630090, Russia

    V. V. Bakovets, L. N. Trushnikova, P. E. Plyusnin, I. V. Korolkov, I. P. Dolgovesova, T. D. Pivovarova & S. A. Savintseva

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  1. V. V. Bakovets
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  2. L. N. Trushnikova
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  3. P. E. Plyusnin
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  4. I. V. Korolkov
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  5. I. P. Dolgovesova
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  6. T. D. Pivovarova
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  7. S. A. Savintseva
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Correspondence to V. V. Bakovets.

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Original Russian Text © V.V. Bakovets, L.N. Trushnikova, P.E. Plyusnin, I.V. Korolkov, I.P. Dolgovesova, T.D. Pivovarova, S.A. Savintseva, 2013, published in Zhurnal Obshchei Khimii, 2013, Vol. 83, No. 10, pp. 1596–1602.

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Bakovets, V.V., Trushnikova, L.N., Plyusnin, P.E. et al. Features of the sol-gel process of formation of nanostructured gadolinium oxide. Russ J Gen Chem 83, 1808–1814 (2013). https://doi.org/10.1134/S1070363213100034

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  • DOI: https://doi.org/10.1134/S1070363213100034

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