Počet záznamů: 1

Enhanced fluorescence of selected cationic dyes adsorbed on reduced-charge montmorillonite

SYSNO ASEP	0370194
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Enhanced fluorescence of selected cationic dyes adsorbed on reduced-charge montmorillonite
Tvůrce(i)	Pustková, P. (CZ) Klika, Z. (CZ) Preclíková, J. (CZ) Matys Grygar, Tomáš (UACH-T)_{RID, SAI, ORCID}
Zdroj.dok.	Clay Minerals. - : Cambridge University Press - ISSN 0009-8558 Roč. 46, č. 1 (2011), s. 93-103
Poč.str.	11 s.
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	cationic dye ; crystal violet ; Nile blue ; rhodamine B ; reduced-charge montmorillonite ; visible spectrophotometry ; fluorescence
Vědní obor RIV	DD - Geochemie
CEZ	AV0Z40320502 - UACH-T (2005-2011)
UT WOS	000288539700007
DOI	10.1180/claymin.2011.046.1.93
Anotace	The aggregation of three cationic dyes (CD), crystal violet (CV), Nile blue (NB) and rhodamine B (RB) in aqueous solution was studied by visible absorption spectrophotometry and compared with methylene blue (MB). The distribution of the dye species (monomers, dimers, trimers, and tetramers) in aqueous solutions with different concentrations of dye was calculated using equilibrium stepwise aggregation constants K(n). These cationic dyes were intercalated into montmorillonite (SAz-1) and its reduced charge form (RC-SAz(210)) prepared by heating lithium montmorillonite (Li/SAz-1) at 210 degrees C. The fluorescence of fully saturated CD/SAz and low-CD loaded CD/RC-SAz(210) complexes was studied. Visible absorption spectra of CD aqueous solutions and visible absorption spectra and X-ray diffraction patterns (d(001)) of the CD/SAz and CD/RC-SAz(210) solid complexes were obtained and evaluated. Large fluorescence intensities were found for CV/RC-SAz(210) and NB/RC-SAz(210) complexes in the same way as for the complex of methylene blue with reduced-charge montmorillonite MB/RCM(210) described previously.
Pracoviště	Ústav anorganické chemie
Kontakt	Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
Rok sběru	2012

Počet záznamů: 1