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Articles

Silica gels grafting with upper rim tetraphosphorylated tetrahydroxy(thia)calixarenes. Europium(III) sorption

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Pages 579-582 | Received 23 Nov 2021, Accepted 22 Dec 2021, Published online: 06 Jan 2022
 

Abstract

Sequential treatment of silica gel with tetrachlorosilane and cone-shaped tetraphosphorylated tetrahydroxy(thia)calixarenes yielded porous organo-inorganic sorbents, the surface of which is covered by spatially ordered phosphonate, phosphinate and phosphine oxide groups capable of co-operative binding of metal cations. Sorption of europium(III) by the modified silica gels was studied.

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Additional information

Funding

This work was partially supported by the National Academy of Sciences of Ukraine through grant «Synthesis of selective ligands and surface modification of polymeric materials for radionuclide extraction».

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