SolGel Synthesis and Physicochemical Properties
of Organosilicon Materials Functionalized by Amino Groups

L. K. Neudachina^a, N. V. Lakiza^a, A. V. Pestov^b, V. A. Osipova^a,
L. V. Adamova^a, and E. M. Gorbunova^a

^aYeltsin Ural Federal University, pr. Lenina 51, Yekaterinburg, 620083 Russia

*e-mail: Natalya_Lakiza@mail.ru

^bPostovsky Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences,
ul. Akademicheskaya/S. Kovalevskoi 22/20, Yekaterinburg, 620990 Russia

Received December 10, 2010

Abstract—The hybrid materials based on polysiloxane modified by amino groups have been synthesized by
the sol–gel method. Aminated polysiloxane has been prepared by the copolycondensation reaction of tetra-
ethoxysilane with -aminopropyltriethoxysilane (APS-1) and through the modification of the product (APS2)
of the hydrolysis of tetraethoxysilane by -aminopropyltriethoxysilane. The composition of sorbents has been
confirmed by the elemental analysis and IR Fourier spectroscopy. The high degree of sorption extraction of cop-
per(II), nickel(II), cobalt(II), zinc(II), cadmium(II), and lead(II) ions in the case of their coexistence in an
ammonia–acetate buffer solution has been observed for polysiloxanes APS-2. The synthesized surface-modi-
fied materials exhibit the highest selectivity to nickel(II) and cobalt(II) ions.

Keywords: “sol–gel” materials, aminopolysiloxanes, specific surface area, thermal stability, transition metals,
sorption

DOI: 10.1134/S1087659611050087

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