Synthesis of a Composite Based on Humic Acid Tuned to Sorbed Copper Ion
Сорбцияланған мыс ионына бапталған, гумин қышқылы негізіндегі композиттің синтезделуі
Синтез композита на основе природного полимера, настроенного на сорбируемый ион меди
Muldakhmetov Z.M. Gazaliev A.M. Zhakina A.K. Vassilets Y.P. Arnt O.V.
2022E.A.Buketov Karaganda State University Publish House
Bulletin of the Karaganda University Chemistry Series
2022#108Issue 4182 - 189 pp.
We obtained modified humic acid-based cross-linked composite pre-tuned to the sorbed copper ion. The composite synthesis had three stages. At first, we obtained prepolymerization complex using humic acids isolated from Shubarkol deposit oxidized coals and multi-walled carbon nanotubes (MWCNTs) with template (CuSO4). We used ultrasonic activation for uniform dispersion of multi-walled carbon nanotubes. Second stage comprised copolymerization in the presence of amine and cross-linker; here the prepolymerization composite complex with the template was fixed in certain nodes of polymer network. At the third stage, acid hydrolysis destroyed the bonds of the template with the composite macromolecules, the template was removed, and imprints complementary to the template in shape, size, and functionality were formed and retained “molecular memory”. Such tuning forms adsorption centers in the polymer network of the composite, which can repeatedly and highly specifically interact with the template, and highly selectively extract target molecules from solution, leading to significant increase in sorbent capacity. The reaction was controlled by direct and back titration, and added amine, which was determined using Elementar Unicube elemental analyzer. The crosslinked composite can be used as a selective sorbent tuned to a specific metal ion.
composite , functionalization , multi-walled carbon nanotubes , natural polymer , sorption , template , tuning , ultrasound
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The National Academy of Sciences of the Republic of Kazakhstan, Chemical Sciences, LLP “Institute of Organic Synthesis and Coal Chemistry of the Republic of Kazakhstan”, Alikhanov str. 1, Karaganda, 100012, Kazakhstan
Chemical Sciences, The Laboratory of Polymer Chemistry, LLP “Institute of Organic Synthesis and Coal Chemistry of the Republic of Kazakhstan”, Alikhanov str. 1, Karaganda, 100012, Kazakhstan
Pedagogical Sciences, The Laboratory of Polymer Chemistry, LLP “Institute of Organic Synthesis and Coal Chemistry of the Republic of Kazakhstan”, Alikhanov str. 1, Karaganda, 100012, Kazakhstan
Technical Sciences, The Laboratory of Polymer Chemistry, LLP “Institute of Organic Synthesis and Coal Chemistry of the Republic of Kazakhstan”, Alikhanov str. 1, Karaganda, 100012, Kazakhstan
The National Academy of Sciences of the Republic of Kazakhstan
Chemical Sciences
Pedagogical Sciences
Technical Sciences
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