Nanoporous ?-cyclodextrin-containing Silicas: Synthesis, Structure and Properties

Authors

  • L. A. Belyakova Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • D. Yu. Lyashenko Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • L. S. Dzyubenko Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • O. M. Shvets Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine

DOI:

https://doi.org/10.15407/hftp05.04.386

Keywords:

silica, β-cyclodextrin, chemical immobilization, sorption, heavy metal nitrates, IR spectroscopy, thermogravimetry, regeneration

Abstract

Nanoporous b-cyclodextrin-containing silicas which differ in functional substituents of wide edge of attached cyclic oligosaccharide molecules (alcohol, bromoacetyl, thiosemicarbazidoacetyl groups) were synthesized. Сhemical composition of surface layer of organosilicas and their sorptional parameters were determined using IR spectroscopy, isotherms of nitrogen ad-desorption, elemental, chemical and thermogravimetric analyses. Ranges of thermal and chemical stability of synthesized b-cyclodextrin-containing silicas were defined; a method of organosilicas regeneration was proposed. Activation energies of water removal from the inner cavities of ?-cyclodextrins and from the surface of functional organosilicas were calculated. Distribution and selectivity coefficients for sorption of mercury(II), copper(II), lead(II), cadmium(II), and zinc(II) cations were computed.

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How to Cite

(1)
Belyakova, L. A.; Lyashenko, D. Y.; Dzyubenko, L. S.; Shvets, O. M. Nanoporous ?-Cyclodextrin-Containing Silicas: Synthesis, Structure and Properties. Him. Fiz. Tehnol. Poverhni 2014, 5, 386-395.

Issue

Vol. 5 No. 4 (2014): Chemistry, Physics and Technology of Surface / Himia, Fizika ta Tehnologia Poverhni

Section

Articles

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