Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Varying the Surface Charges of Gold Nanoparticles in Span 80, AOT, and Span 80 + AOT Micellar Systems in n-Decane. / Poleeva, E. V.; Arymbaeva, A. T.; Bulavchenko, A. I.
в: Russian Journal of Physical Chemistry A, Том 94, № 11, 01.11.2020, стр. 2291-2298.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Varying the Surface Charges of Gold Nanoparticles in Span 80, AOT, and Span 80 + AOT Micellar Systems in n-Decane
AU - Poleeva, E. V.
AU - Arymbaeva, A. T.
AU - Bulavchenko, A. I.
N1 - Funding Information: This work was supported by the Russian Foundation for Basic Research, project no. 20-03-00017. Publisher Copyright: © 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/11/1
Y1 - 2020/11/1
N2 - Gold nanoparticles with different diameters of the metal core are obtained by reducing HAuCl4 with hydrazine in reverse emulsions stabilized by Span 80 (9.4 ± 0.4 nm), AOT (6.1 ± 0.2 nm), and an equimolar Span 80 + AOT mixture (10.0 ± 0.2 nm). After synthesis, only the nanoparticles in the AOT solutions (ζ potential 16.8 ± 0.9 mV) display electrophoretic mobility. Nanoparticles in the form of a small-volume liquid phase concentrate are also separated from excess reagents and by-products by concentration (non-aqueous electrophoresis, or centrifugation) and diluted with micellar solutions (Span 80, AOT, and Span 80 + AOT mixture) or pure solvents (n-decane and chloroform). As a result, 24 organosols are obtained, including ones with positive (11), negative (8), and uncharged (5) nanoparticles. Of particular potential interest are organosols that have the same macrostructure in terms of surfactants, but with oppositely charged gold nanoparticles (7 pairs of organosols are obtained).
AB - Gold nanoparticles with different diameters of the metal core are obtained by reducing HAuCl4 with hydrazine in reverse emulsions stabilized by Span 80 (9.4 ± 0.4 nm), AOT (6.1 ± 0.2 nm), and an equimolar Span 80 + AOT mixture (10.0 ± 0.2 nm). After synthesis, only the nanoparticles in the AOT solutions (ζ potential 16.8 ± 0.9 mV) display electrophoretic mobility. Nanoparticles in the form of a small-volume liquid phase concentrate are also separated from excess reagents and by-products by concentration (non-aqueous electrophoresis, or centrifugation) and diluted with micellar solutions (Span 80, AOT, and Span 80 + AOT mixture) or pure solvents (n-decane and chloroform). As a result, 24 organosols are obtained, including ones with positive (11), negative (8), and uncharged (5) nanoparticles. Of particular potential interest are organosols that have the same macrostructure in terms of surfactants, but with oppositely charged gold nanoparticles (7 pairs of organosols are obtained).
KW - charge
KW - concentration
KW - electrokinetic potential
KW - emulsions
KW - nanoparticles
KW - photon correlation spectroscopy
KW - surfactants
KW - CONDUCTIVITY
UR - http://www.scopus.com/inward/record.url?scp=85094648649&partnerID=8YFLogxK
U2 - 10.1134/S0036024420110278
DO - 10.1134/S0036024420110278
M3 - Article
AN - SCOPUS:85094648649
VL - 94
SP - 2291
EP - 2298
JO - Russian Journal of Physical Chemistry A
JF - Russian Journal of Physical Chemistry A
SN - 0036-0244
IS - 11
ER -
ID: 25992888