Effects of enhanced clusterization of water at a surface of partially silylated nanosilica on adsorption of cations and anions from aqueous media

Adsorption of metal species Ba(II), Sr(II), Zn(II), Ca(II), and Mg(II) and anions Cl−, Br−, and I− at a surface of unmodified and partially silylated nanosilica A-300 was studied in aqueous media upon changes in the degree of substitution of silanols to trimethylsilyl groups (ΘTMS) at ΘTMS = 0.272–0...

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Published in:Microporous and mesoporous materials 2019-03, Vol.277, p.95-104
Main Authors: Mironyuk, I.F., Gun'ko, V.M., Vasylyeva, H.V., Goncharuk, O.V., Tatarchuk, T.R., Mandzyuk, V.I., Bezruka, N.A., Dmytrotsa, T.V.
Format: Article
Language:English
Subjects:
Anion adsorption
Cation adsorption
Fumed silica
Partially silylated nanosilica
Zeta potential
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Summary:Adsorption of metal species Ba(II), Sr(II), Zn(II), Ca(II), and Mg(II) and anions Cl−, Br−, and I− at a surface of unmodified and partially silylated nanosilica A-300 was studied in aqueous media upon changes in the degree of substitution of silanols to trimethylsilyl groups (ΘTMS) at ΘTMS = 0.272–0.483. The cation adsorption increases in series Sr(II) 
ISSN:1387-1811
1873-3093
DOI:10.1016/j.micromeso.2018.10.016