Interaction between amino-functionalized inorganic nanoshells and acid-autocatalytic reactions

Emese Lantos, Nirmali Prabha Das, Dániel Simon Berkesi, Dorina Dobó, Á. Kukovecz, Dezs Horváth, A. Tóth

Research output: Contribution to journalArticle

Abstract

Amino-functionalized inorganic silica nanoshells with a diameter of 511 ± 57 nm are efficiently used as hydrogen ion binders with a base dissociation constant of (1.2 ± 0.1) × 10-4. The hydrogen removal has been shown to produce reaction-diffusion fronts of constant propagation velocity in the autocatalytic chlorite-tetrathionate reaction when it is run in thin planar slices of nanoshell-containing agarose gel to exclude all convection related effects. By controlling the exact amount of amino-functionalized hollow nanospheres in the gel matrix it is possible to finely tune the propagation velocity of the chemical front in the 0.1-10 cm h-1 range. Remarkably, this can be achieved with very low amino-functionalized hollow inorganic nanosphere loadings between 0.1-0.01 (m V-1)%. The front width has also been determined experimentally, which increases by a factor of two with one magnitude decrease in the front velocity.

Original languageEnglish
Pages (from-to)13365-13369
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume20
Issue number19
DOIs
Publication statusPublished - Jan 1 2018

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Nanoshells
Nanospheres
acids
Acids
propagation velocity
Gels
hollow
interactions
gels
Silicon Dioxide
Sepharose
Binders
Protons
Hydrogen
hydrogen ions
convection
dissociation
silicon dioxide
hydrogen
matrices

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Interaction between amino-functionalized inorganic nanoshells and acid-autocatalytic reactions. / Lantos, Emese; Das, Nirmali Prabha; Berkesi, Dániel Simon; Dobó, Dorina; Kukovecz, Á.; Horváth, Dezs; Tóth, A.

In: Physical Chemistry Chemical Physics, Vol. 20, No. 19, 01.01.2018, p. 13365-13369.

Research output: Contribution to journalArticle

Lantos, Emese ; Das, Nirmali Prabha ; Berkesi, Dániel Simon ; Dobó, Dorina ; Kukovecz, Á. ; Horváth, Dezs ; Tóth, A. / Interaction between amino-functionalized inorganic nanoshells and acid-autocatalytic reactions. In: Physical Chemistry Chemical Physics. 2018 ; Vol. 20, No. 19. pp. 13365-13369.
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