Electrokinetic properties of aluminum oxide nanodispersions in NaCl solutions

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Electrokinetic properties of aluminum oxide nanodispersions in NaCl solutions. / Volkova, A.V.; Ermakova, L.E.; Golikova, E.V.; Bogdanova, N.F.

In: Colloid Journal, No. 1, 2013, p. 49-58.

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

BibTeX

@article{9009929986f74038b01f75a70567e640,

title = "Electrokinetic properties of aluminum oxide nanodispersions in NaCl solutions",

abstract = "Using a Zetasizer Nano analyzer, electrophoretic mobility and particle sizes are studied as depending on the pH (3-11) and concentration (10 -3-10-1 M) of NaCl background solutions for two samples of aluminum oxide, namely, γ-oxide of the Degussa brand and a sample synthesized by aluminum chloride hydrolysis. The values of the electrokinetic ζ potential are calculated through the Smoluchowski equation and with allowance for the effect of the polarization of electrical double layer on the electrophoretic mobility within the framework of the Overbeek-Boes-Wiersema model (ζW). It is established that, in the region of the isoelectric point (IEP), at (pH-pHIEP) = ±1.5, the |ζW|-pH dependences are linear and their slopes are almost equal for both aluminum oxide samples. The difference between the positions of IEPs for γ-oxide and synthesized oxide sample may be related to different degrees of their surface hydration. {\textcopyright} 2013 Pleiades Publishing, Ltd.",

author = "A.V. Volkova and L.E. Ermakova and E.V. Golikova and N.F. Bogdanova",

year = "2013",

doi = "10.1134/S1061933X12060178",

language = "English",

pages = "49--58",

journal = "Colloid Journal",

issn = "1061-933X",

publisher = "Pleiades Publishing",

number = "1",

}

RIS

TY - JOUR

T1 - Electrokinetic properties of aluminum oxide nanodispersions in NaCl solutions

AU - Volkova, A.V.

AU - Ermakova, L.E.

AU - Golikova, E.V.

AU - Bogdanova, N.F.

PY - 2013

Y1 - 2013

N2 - Using a Zetasizer Nano analyzer, electrophoretic mobility and particle sizes are studied as depending on the pH (3-11) and concentration (10 -3-10-1 M) of NaCl background solutions for two samples of aluminum oxide, namely, γ-oxide of the Degussa brand and a sample synthesized by aluminum chloride hydrolysis. The values of the electrokinetic ζ potential are calculated through the Smoluchowski equation and with allowance for the effect of the polarization of electrical double layer on the electrophoretic mobility within the framework of the Overbeek-Boes-Wiersema model (ζW). It is established that, in the region of the isoelectric point (IEP), at (pH-pHIEP) = ±1.5, the |ζW|-pH dependences are linear and their slopes are almost equal for both aluminum oxide samples. The difference between the positions of IEPs for γ-oxide and synthesized oxide sample may be related to different degrees of their surface hydration. © 2013 Pleiades Publishing, Ltd.

AB - Using a Zetasizer Nano analyzer, electrophoretic mobility and particle sizes are studied as depending on the pH (3-11) and concentration (10 -3-10-1 M) of NaCl background solutions for two samples of aluminum oxide, namely, γ-oxide of the Degussa brand and a sample synthesized by aluminum chloride hydrolysis. The values of the electrokinetic ζ potential are calculated through the Smoluchowski equation and with allowance for the effect of the polarization of electrical double layer on the electrophoretic mobility within the framework of the Overbeek-Boes-Wiersema model (ζW). It is established that, in the region of the isoelectric point (IEP), at (pH-pHIEP) = ±1.5, the |ζW|-pH dependences are linear and their slopes are almost equal for both aluminum oxide samples. The difference between the positions of IEPs for γ-oxide and synthesized oxide sample may be related to different degrees of their surface hydration. © 2013 Pleiades Publishing, Ltd.

U2 - 10.1134/S1061933X12060178

DO - 10.1134/S1061933X12060178

M3 - Article

SP - 49

EP - 58

JO - Colloid Journal

JF - Colloid Journal

SN - 1061-933X

IS - 1

ER -

ID: 7519762