Abstract
Polysiloxane functionalized with aminoacetic acid groups was synthesized using sol–gel technology. Elemental analysis and FTIR spectroscopy were used to determine the composition of the polysiloxane show that it is a mesoporous material with a developed surface (109.4 m2/g). It was found that the selective properties of carboxymethylated polysiloxane towards transition metal ions simultaneously present in an ammonium acetate solution change in the order Zn < Cu > Ni > Co > Pb > Cd. It was shown that the sorption of copper(II) ions by carboxymethylated aminopropylpolysiloxane with particle sizes of 50–71 μm reaches its maximum level within 2 h; the rate-limiting step of the process is the chemical reaction between the ions and the polysiloxane functional groups; and the pseudo-second-order model is the best way of describing sorption.
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Original Russian Text © N.V. Lakiza, L.K. Neudachina, 2016, published in Zhurnal Fizicheskoi Khimii, 2016, Vol. 90, No. 7, pp. 1072–1077.
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Lakiza, N.V., Neudachina, L.K. Synthesis and physicochemical properties of polysiloxane functionalized with aminoacetic acid groups. Russ. J. Phys. Chem. 90, 1450–1455 (2016). https://doi.org/10.1134/S0036024416070165
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DOI: https://doi.org/10.1134/S0036024416070165