TY - JOUR

T1 - Synthesis and electrophoretic concentration of nanoparticles of CdS in reversed micellar solutions

AU - Bulavchenko, A. I.

AU - Sap'Yanik, A. A.

AU - Demidova, M. G.

N1 - Funding Information: This work was supported by the RF Ministry of Education and Science under the federal target pro gram Scientists and Science Teachers of an Innovative Russia, contract no. 8472 of August 31, 2012; and by the Russian Foundation for Basic Research, project no. 13 03 00092 a. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 2014/3

Y1 - 2014/3

N2 - Stable organosols of cadmium sulfide are obtained via the ion exchange reaction of cadmium nitrate with sodium sulfide in reversed micellar solutions of Brij-30 in n-decane and are characterized by means of spectrophotometry, luminescence, photon correlation spectroscopy (PCS), and transmission electron microscopy (TEM). It is established that adding anionic surfactant AOT to organosols produces double electric layers on the surfaces of nanoparticles and contributes to an additional 50-fold electrophoretic concentration. Electrophoretic concentrates of cadmium sulfide nanoparticles (0.5 M) are obtained in cells with vertical orientation of the electrodes and periodic changes in polarity. The average diameter of the nanoparticles according to TEM data is 5 nm, considerably less than the hydrodynamic diameter found by PCS (70 nm), testifying to the complex structure of a mixed adsorption layer surrounding a nanoparticle.

AB - Stable organosols of cadmium sulfide are obtained via the ion exchange reaction of cadmium nitrate with sodium sulfide in reversed micellar solutions of Brij-30 in n-decane and are characterized by means of spectrophotometry, luminescence, photon correlation spectroscopy (PCS), and transmission electron microscopy (TEM). It is established that adding anionic surfactant AOT to organosols produces double electric layers on the surfaces of nanoparticles and contributes to an additional 50-fold electrophoretic concentration. Electrophoretic concentrates of cadmium sulfide nanoparticles (0.5 M) are obtained in cells with vertical orientation of the electrodes and periodic changes in polarity. The average diameter of the nanoparticles according to TEM data is 5 nm, considerably less than the hydrodynamic diameter found by PCS (70 nm), testifying to the complex structure of a mixed adsorption layer surrounding a nanoparticle.

KW - cadmium sulfide

KW - electrophoretic concentration

KW - nanoparticles

KW - photon correlation spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=84896984973&partnerID=8YFLogxK

U2 - 10.1134/S003602441402006X

DO - 10.1134/S003602441402006X

M3 - Article

AN - SCOPUS:84896984973

VL - 88

SP - 509

EP - 514

JO - Russian Journal of Physical Chemistry A

JF - Russian Journal of Physical Chemistry A

SN - 0036-0244

IS - 3

ER -