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Registration Number

0219U101796, 0117U004532 , R & D reports

Title

Application of sol-gel technology to create new sorbents and membranes with a complex surface layer

Head

Tertykh Valentyn A., Доктор хімічних наук

Registration Date

05-11-2019

Organization

Chuiko Institute of Surface Chemistry of NAS of Ukraine

Description

 Samples of mesoporous silica with different concentrations of phosphonic acid on the surface were obtained by direct template synthesis. The block copolymer P123 was used as a template, and sodium metasilicate with diethylphosphatoethyltriethoxysilane as precursors. According to the diffraction patterns, the samples of mesoporous silica have hexagonal symmetry p6mm. In addition, xerogel with similar groups synthesized by the sol-gel method was used for comparison. All samples have high values ​​of specific surface area of ​​615-730 m2 / g. IR spectroscopy and potentiometric titration methods were used to study the surface layer of these samples. The sorption properties of samples with phosphonic acid groups with respect to a number of metal cations (lead (II), cadmium (II) and dysprosium (III)) have been studied.

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Dudarko Oksana A.
Melnyk Innа V.
Stolyarchuk Nataliya V.
Tomina Veronika V.
Tertykh Valentyn A.