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Functionalization of halloysite with N-(2-aminoethyl)-3-aminopropyl-trimethoxysilane

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 reveal...

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Published in:	Russian chemical bulletin 2021-06, Vol.70 (6), p.1180-1184
Main Authors:	Osipova, V. A., Pestov, A. V., Mekhaev, A. V., Abuelsoad, A. M. A., Tambasova, D. P., Kovaleva, E. G.
Format:	Article
Language:	English
Subjects:	Acetonitrile Chelation Chemistry Chemistry and Materials Science Chemistry/Food Science Full Articles Inorganic Chemistry Organic Chemistry Silanes Solvents Tetrahydrofuran Thermogravimetry
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description	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.
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subjects	Acetonitrile Chelation Chemistry Chemistry and Materials Science Chemistry/Food Science Full Articles Inorganic Chemistry Organic Chemistry Silanes Solvents Tetrahydrofuran Thermogravimetry
title	Functionalization of halloysite with N-(2-aminoethyl)-3-aminopropyl-trimethoxysilane
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