Research output: Contribution to journal › Article › peer-review
Preparation of Silver Nanoparticles in a Water-in-Oil Microemulsion Stabilized by Ecosurf EH3 and Determination of Their Electrophoretic Mobility. / Popovetskiy, Pavel S.; Petrochenko, Sofia A.
In: Electrophoresis, Vol. 45, No. 21-22, 22.11.2024, p. 1955-1962.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Preparation of Silver Nanoparticles in a Water-in-Oil Microemulsion Stabilized by Ecosurf EH3 and Determination of Their Electrophoretic Mobility
AU - Popovetskiy, Pavel S.
AU - Petrochenko, Sofia A.
N1 - This research was funded by the Russian Science Foundation (22-73-00144).
PY - 2024/11/22
Y1 - 2024/11/22
N2 - This work describes a study on the electrophoresis of silver nanoparticles in reverse microemulsions with varying water content. The microemulsion was stabilized using a nonionic ethoxylated surfactant, 2-ethylhexanol triethoxylate (Ecosurf EH3). This study represents the second example of electrophoresis research conducted in media with a low dielectric constant for etoxylated surfactants. The study also determined the boundaries of thermodynamic stability and the conditions required to obtain nanoparticles with a high yield. The hydrodynamic diameter and electrophoretic mobility of nanoparticles were measured using dynamic light scattering and laser Doppler electrophoresis. The study determined the boundary conditions for applying these methods to laser-absorbing samples. The electrophoretic mobility of nanoparticles was found to be dependent on the fraction of water in the range of 2–5% vol. (equivalent to a metal content of 10–25 mM), as determined by electrophoresis in a free medium. The increase in volume fraction of water leads to agglomeration of micelles, which causes a decrease in the electrokinetic potential of nanoparticles, likely due to the blurring of the diffuse part of the electrical double layer.
AB - This work describes a study on the electrophoresis of silver nanoparticles in reverse microemulsions with varying water content. The microemulsion was stabilized using a nonionic ethoxylated surfactant, 2-ethylhexanol triethoxylate (Ecosurf EH3). This study represents the second example of electrophoresis research conducted in media with a low dielectric constant for etoxylated surfactants. The study also determined the boundaries of thermodynamic stability and the conditions required to obtain nanoparticles with a high yield. The hydrodynamic diameter and electrophoretic mobility of nanoparticles were measured using dynamic light scattering and laser Doppler electrophoresis. The study determined the boundary conditions for applying these methods to laser-absorbing samples. The electrophoretic mobility of nanoparticles was found to be dependent on the fraction of water in the range of 2–5% vol. (equivalent to a metal content of 10–25 mM), as determined by electrophoresis in a free medium. The increase in volume fraction of water leads to agglomeration of micelles, which causes a decrease in the electrokinetic potential of nanoparticles, likely due to the blurring of the diffuse part of the electrical double layer.
KW - charge stabilization in nonpolar media
KW - microemulsions
KW - nanoparticles
KW - nonaqueous electrophoresis
KW - surfactants
KW - Metal Nanoparticles/chemistry
KW - Emulsions/chemistry
KW - Water/chemistry
KW - Oils/chemistry
KW - Silver/chemistry
KW - Particle Size
KW - Hexanols/chemistry
KW - Surface-Active Agents/chemistry
KW - Electrophoresis/methods
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85208231481&origin=inward&txGid=75542e021bcd995d32a64734637847c6
UR - https://www.webofscience.com/wos/woscc/full-record/WOS:001354632000001
UR - https://www.mendeley.com/catalogue/c8f56305-fc71-378e-b90f-1f737d39f586/
U2 - 10.1002/elps.202400200
DO - 10.1002/elps.202400200
M3 - Article
C2 - 39508200
VL - 45
SP - 1955
EP - 1962
JO - Electrophoresis
JF - Electrophoresis
SN - 0173-0835
IS - 21-22
ER -
ID: 61200672