Research output: Contribution to journal › Article › peer-review
Structural Characteristics and Electrical Conductivity of Porous Glasses with Different Compositions in Solutions of Sodium, Lanthanum and Iron(III) Chlorides. / Ermakova, L. E.; Kuznetsova, A. S.; Antropova, T. V.; Volkova, A. V.; Anfimova, I. N.
In: Colloid Journal, Vol. 82, No. 3, 01.05.2020, p. 262-274.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Structural Characteristics and Electrical Conductivity of Porous Glasses with Different Compositions in Solutions of Sodium, Lanthanum and Iron(III) Chlorides
AU - Ermakova, L. E.
AU - Kuznetsova, A. S.
AU - Antropova, T. V.
AU - Volkova, A. V.
AU - Anfimova, I. N.
PY - 2020/5/1
Y1 - 2020/5/1
N2 - Abstract: The structural characteristics (structural resistance coefficient, volume porosity, tortuosity coefficient, average pore radius, specific surface area) and specific electrical conductivity of high-silica micro- and macroporous glasses with different compositions (basic magnetite-free and magnetite-containing glasses) have been studied in solutions of sodium, lanthanum, and iron(III) chlorides at a constant ionic strength. It has been found that the differences in the morphology of the pore space and characteristics of secondary silica are the reasons for different intensities of variations in the structural parameters of microporous glasses upon their long-term contact with electrolyte solutions, with the most pronounced time variations occurring in lanthanum chloride solutions. In indifferent electrolyte solutions, glass composition has no effect on the value of the efficiency coefficient. For microporous glasses in solutions containing specifically adsorbabable ions, the value of the efficiency coefficient is mainly affected by the structure of secondary silica in pore space, other conditions being equal. It has been revealed that, in iron chloride solutions, the specificity of the counterions is more pronounced for the basic porous glasses.
AB - Abstract: The structural characteristics (structural resistance coefficient, volume porosity, tortuosity coefficient, average pore radius, specific surface area) and specific electrical conductivity of high-silica micro- and macroporous glasses with different compositions (basic magnetite-free and magnetite-containing glasses) have been studied in solutions of sodium, lanthanum, and iron(III) chlorides at a constant ionic strength. It has been found that the differences in the morphology of the pore space and characteristics of secondary silica are the reasons for different intensities of variations in the structural parameters of microporous glasses upon their long-term contact with electrolyte solutions, with the most pronounced time variations occurring in lanthanum chloride solutions. In indifferent electrolyte solutions, glass composition has no effect on the value of the efficiency coefficient. For microporous glasses in solutions containing specifically adsorbabable ions, the value of the efficiency coefficient is mainly affected by the structure of secondary silica in pore space, other conditions being equal. It has been revealed that, in iron chloride solutions, the specificity of the counterions is more pronounced for the basic porous glasses.
KW - COLLOIDO-CHEMICAL CHARACTERISTICS
KW - ELECTROSURFACE PROPERTIES
KW - ELECTROKINETIC CHARACTERISTICS
KW - TRANSPORT CHARACTERISTICS
KW - MAGNETIC-PROPERTIES
KW - NANOPOROUS GLASSES
KW - MEMBRANES
KW - FABRICATION
KW - PARAMETERS
KW - ADSORPTION
UR - http://www.scopus.com/inward/record.url?scp=85085276338&partnerID=8YFLogxK
U2 - 10.1134/S1061933X20030035
DO - 10.1134/S1061933X20030035
M3 - Article
AN - SCOPUS:85085276338
VL - 82
SP - 262
EP - 274
JO - Colloid Journal
JF - Colloid Journal
SN - 1061-933X
IS - 3
ER -
ID: 53815076