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The preparation of gold nanoparticles in triton N-42 reverse micelles after preliminary concentration from acid sulfate-chloride solutions

  • Physical Chemistry of Nanoclusters and Nanomaterials
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Abstract

The distribution of Au(III) between an acid (3 mol/l HCl) aqueous phase and a micellar Triton N-42 solution in n-decane was studied as a function of the concentration of Na2SO4 (0–3.55 mol/l). The high distribution coefficients (200–500) allow 50-fold absolute concentration to be performed at a 90% extraction. Au0 nanoparticles were obtained by the injection solubilization of a reducing agent (hydrazine) into micellar extracts. At low solubilization capacities (≤1 vol %) and high reducing agent concentrations (≥0.2 mol/l) in Triton N-42 micelles, stable systems of Au0 nanoparticles suitable for the spectrophotometric determination of gold were obtained. At high solubilization capacities and low hydrazine concentrations, reduction was accompanied by coagulation and sedimentation processes. These processes were studied by spectrophotometry and the static and dynamic light scattering methods.

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Authors and Affiliations

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

    A. I. Bulavchenko, A. T. Arymbaeva, O. A. Bulavchenko, V. V. Tatarchuk & N. I. Petrova

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  1. A. I. Bulavchenko
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  2. A. T. Arymbaeva
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  3. O. A. Bulavchenko
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  4. V. V. Tatarchuk
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  5. N. I. Petrova
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Original Russian Text © A.I. Bulavchenko, A.T. Arymbaeva, O.A. Bulavchenko, V.V. Tatarchuk, N.I. Petrova, 2006, published in Zhurnal Fizicheskoi Khimii, 2006, Vol. 80, No. 12, pp. 2220–2225.

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Bulavchenko, A.I., Arymbaeva, A.T., Bulavchenko, O.A. et al. The preparation of gold nanoparticles in triton N-42 reverse micelles after preliminary concentration from acid sulfate-chloride solutions. Russ. J. Phys. Chem. 80, 1980–1985 (2006). https://doi.org/10.1134/S0036024406120181

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  • DOI: https://doi.org/10.1134/S0036024406120181

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