Ion-selective membranes involved in pattern-forming processes

Péter Hantz, Julian Partridge, G. Láng, Szabolcs Horvát, M. Újvári

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The ability of simple inorganic reactions such as NaOH + CuCl2, NaOH + AgNO3, and CuCl2 + K3[Fe-(CN) 6] to form various complex precipitation patterns has recently been discovered. When the first reagent penetrates into a hydrogel by diffusion and reacts with the second reagent homogenized in the gel, a precipitate is built up that has two kinds of bordering surfaces with different properties. Our experimental results suggest that one of these surfaces is permeable, while the other one is an ion-selective membrane that restrains the diffusion of the first reagent's reacting ion, preventing the reactions from proceeding ahead of the membrane. The presence of an intermediary compound, the precursor of the precipitate, is observed in the front of the permeable surface.

Original languageEnglish
Pages (from-to)18135-18139
Number of pages5
JournalJournal of Physical Chemistry B
Volume108
Issue number47
DOIs
Publication statusPublished - Nov 25 2004

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Ion selective membranes
reagents
membranes
Precipitates
precipitates
ions
Hydrogel
Hydrogels
Gels
gels
Ions
Membranes
cupric chloride

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Ion-selective membranes involved in pattern-forming processes. / Hantz, Péter; Partridge, Julian; Láng, G.; Horvát, Szabolcs; Újvári, M.

In: Journal of Physical Chemistry B, Vol. 108, No. 47, 25.11.2004, p. 18135-18139.

Research output: Contribution to journalArticle

Hantz, Péter ; Partridge, Julian ; Láng, G. ; Horvát, Szabolcs ; Újvári, M. / Ion-selective membranes involved in pattern-forming processes. In: Journal of Physical Chemistry B. 2004 ; Vol. 108, No. 47. pp. 18135-18139.
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