The influence of surfactant nature on the structural, morphological and sorption properties of ormosils with immobilized aminogroups

doi:10.26565/2220-637X-2013-22-20

Oleg S. Tkachenko V.N. Karazin Kharkiv National University https://orcid.org/0000-0002-2765-8625
Inna V. Khristenko V.N. Karazin Kharkiv National University https://orcid.org/0000-0001-7227-8333
Albina A. Mikhraliieva V.N. Karazin Kharkiv National University https://orcid.org/0000-0003-2403-6692
Anton V. Panteleimonov V.N. Karazin Kharkiv National University https://orcid.org/0000-0003-0265-1264
Yuriy V. Kholin V.N. Karazin Kharkiv National University https://orcid.org/0000-0003-1369-741X

DOI: https://doi.org/10.26565/2220-637X-2013-22-20

Keywords: template, ormosil, bidentate binding, cooperativity effects

Abstract

Two samples of ormosils, Material 1 and Material 2, synthesized by sol-gel procedure using cation and anion surfactants, have specific surface areas 17±2 and 176±5 m² g^-1 and average pore sizes 3.6 and 3.3 nm, correspondingly. The proposed method for surfactants removing was better for Material 1 than for Material 2. The model of bidentate binding adequately describes the protolytic properties of immobilized aminogroups in both cases. The basicity of immobilized aminogroups is higher for Material 2; negative cooperativity effects are observed at protonation of aminogroups for both materials.

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