Varying the Surface Charges of Gold Nanoparticles in Span 80, AOT, and Span 80 + AOT Micellar Systems in n-Decane

Standard

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.

In: Russian Journal of Physical Chemistry A, Vol. 94, No. 11, 01.11.2020, p. 2291-2298.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{e44d82ba7c784610a0028edbddb682ca,

title = "Varying the Surface Charges of Gold Nanoparticles in Span 80, AOT, and Span 80 + AOT Micellar Systems in n-Decane",

abstract = "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).",

keywords = "charge, concentration, electrokinetic potential, emulsions, nanoparticles, photon correlation spectroscopy, surfactants, CONDUCTIVITY",

author = "Poleeva, {E. V.} and Arymbaeva, {A. T.} and Bulavchenko, {A. I.}",

note = "Funding Information: This work was supported by the Russian Foundation for Basic Research, project no. 20-03-00017. Publisher Copyright: {\textcopyright} 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = nov,

day = "1",

doi = "10.1134/S0036024420110278",

language = "English",

volume = "94",

pages = "2291--2298",

journal = "Russian Journal of Physical Chemistry A",

issn = "0036-0244",

publisher = "PLEIADES PUBLISHING INC",

number = "11",

}

RIS

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