Publication detail

The rhodamine B intercalation of montmorillonite.

KLIKA, Z. DOLEŽALOVÁ WEISSMANNOVÁ, H.

Original Title

Type

journal article - other

Language

English

Original Abstract

Using photometric methods the dissociation constants and weight fractions of rhodamine B dimer in water solutions at different concentrations were determined. The montmorillonite (SWy) samples were fully intercalated with rhodamine B (RhB) solutions at various monomer/dimer ratios. The amount of rhodamine B in fully intercalated montmorillonite (RhB-SWy) increases with increasing concentration of dye in water solutions, i.e., with increasing dimer/monomer ratio. The sum of exchangeable guest cations in RhB-SWy is approximately constant (0.900 meq g(-1)) for all samples, because RhB-SWy samples with prevailing dye monomer also contain higher amounts of non-exchanged alkali elements. The experimental data are supported by calculated structure models that illustrate the changes in RhB-SWy structure depending on monomeric and/or dimeric arrangement of guests. The analysis of the calculated structure models confirmed the existence of two phases with different basal spacings, d approximately 1.8 and approximately 2.3 nm, revealed by X-ray diffraction.

Keywords

montmorillonite, intercalation, interlayer, dye, rhodamine

Authors

KLIKA, Z.; DOLEŽALOVÁ WEISSMANNOVÁ, H.

Released

1. 6. 2004

Publisher

Elsevier

Location

Elsevier

ISBN

0021-9797

Periodical

Journal of Colloid and Interface Science

Year of study

275

Number

State

United States of America

Pages from

243

Pages to

250

Pages count

BibTex

@article{BUT46610,
  author="Zdeněk {Klika} and Helena {Doležalová Weissmannová}",
  title="The rhodamine B intercalation of montmorillonite.",
  journal="Journal of Colloid and Interface Science",
  year="2004",
  volume="275",
  number="1",
  pages="243--250",
  issn="0021-9797"
}