title: Magneto-Sensitive Adsorbents Modified by Functional Nitrogen-Containing Groups.
abstract: In order to obtain amino-functionalized silica materials with magnetic core, one-step synthesis was carried out. Several materials, differ in number and structure of amino groups, were synthesized on the basis of sol-gel method. The synthesized materials were examined by several analytical techniques. The presence and content of amino groups were measured by using Diffuse Reflectance Infrared Fourier Transform (DRIFT) spectroscopy and acid-base titration, respectively. Specific surface areas were measured by nitrogen/adsorption desorption isotherms. It was proved that sol-gel approach leads to obtain materials with high content of amino groups built into their surfaces (in the range 1.6-2.7 mmol/g). As-obtained materials were tested as potential adsorbents for copper(II) ions. The received maximum adsorption capacities were in the range 0.4-0.7 mmol/g.
authors: Department of Surface Chemistry of Hybrid Materials, Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 17, General Naumov str., Kyiv, 03164, Ukraine. in.melnyk@gmail.com.
authors: Inna V
authors: IV
authors: Melnyk
authors: Faculty of Chemistry, Maria Curie-Sklodowska University, 3, Maria Curie-Sklodowska Sq., Lublin, 20-031, Poland.
authors: Karolina
authors: K
authors: Gdula
authors: Faculty of Chemistry, Maria Curie-Sklodowska University, 3, Maria Curie-Sklodowska Sq., Lublin, 20-031, Poland.
authors: Andrzej
authors: A
authors: Dąbrowski
authors: Department of Surface Chemistry of Hybrid Materials, Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 17, General Naumov str., Kyiv, 03164, Ukraine.
authors: Yuriy L
authors: YL
authors: Zub
keywords: Copper(II) ions adsorption; Magnetite nanoparticles; Nitrogen-containing functional groups; Polysiloxane shells