Resumo

In order to increase the affinity of the halloysite mineral to 3d-metal ions, its surface was functionalized with N-(2-aminoethyl)-3-aminopropyltrimethoxysilane. A significant influence of the nature of the solvent and silane concentration on the degree of functionalization of halloysite was revealed. According to the data of elemental analysis, FTIR spectroscopy, and thermogravimetry, it was found that the most efficient solvents were tetrahydrofuran and acetonitrile at an equimolar silane to halloysite ratio. The functionalization of halloysite with N-(2-aminoethyl)-3-aminopropylsilyl groups significantly increases the sorption capacity of the material in comparison with both unmodified halloysite and halloysite functionalized with non-chelating 3-aminopropylsilyl groups.
Título traduzido da contribuiçãoFUNCTIONALIZATION OF HALLOYSITE WITH N-(2-AMINOETHYL)-3-AMINOPROPYL-TRIMETHOXYSILANE
Idioma originalRussian
Páginas (de-até)1180-1184
Número de páginas5
RevistaИзвестия Академии наук. Серия химическая
Número de emissão6
Estado da publicaçãoPublished - 2021

GRNTI

  • 31.00.00 CHEMISTRY

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  • VAK List

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