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

Autor:	A. M. A. Abuelsoad, V. A. Osipova, Alexander V. Mekhaev, D. P. Tambasova, E. G. Kovaleva, Alexander V. Pestov
Rok vydání:	2021
Předmět:	Sorption General Chemistry engineering.material Halloysite Silane Solvent Thermogravimetry chemistry.chemical_compound chemistry engineering Surface modification Acetonitrile Tetrahydrofuran Nuclear chemistry
Zdroj:	Russian Chemical Bulletin. 70:1180-1184
ISSN:	1573-9171 1066-5285
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1c0f0ff0e1ff970e24197b9436cd7600 https://doi.org/10.1007/s11172-021-3202-7 Zobrazit plný text záznamu Full text from SpringerLink