Different level of fluorescence in Raman spectra of montmorillonites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F16%3A00460794" target="_blank" >RIV/68145535:_____/16:00460794 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27360/16:86095736

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.vibspec.2016.02.007" target="_blank" >http://dx.doi.org/10.1016/j.vibspec.2016.02.007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.vibspec.2016.02.007" target="_blank" >10.1016/j.vibspec.2016.02.007</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Different level of fluorescence in Raman spectra of montmorillonites

Popis výsledku v původním jazyce

The paper presents the study of selected montmorillonite standards by Raman spectroscopy and microscopy supported by elemental analysis, X-ray powder diffraction analysis and thermal analysis. Dispersive Raman spectroscopy with excitation lasers of 532 nm and 780 nm, dispersive Raman microscopy with excitation laser of 532 nm and 100x magnifying lens, and Fourier Transform-Raman spectroscopy with excitation laser of 1064 nm were used for the analysis of four montmorillonites (Kunipia-F, SWy-2, STx-1b and SAz-2). These mineral standards differed mainly in the type of interlayer cation and substitution of octahedral aluminium by magnesium or iron. A comparison of measured Raman spectra of montmorillonite with regard to their level of fluorescence and the presence of characteristic spectral bands was carried out. Almost all measured spectra of montmorillonites were significantly affected by fluorescence and only one sample was influenced by fluorescence slightly or not at all. In the spectra of tested montmorillonites, several characteristic Raman bands were found. The most intensive band at 96 cm(-1) belongs to deformation vibrations of interlayer cations. The band at 200 cm(-1) corresponds to deformation vibrations of the AlO6 octahedron and at 710 cm(-1) can be assigned to deformation vibrations of the SiO4 tetrahedron. The band at 3620 cm(-1) corresponds to the stretching vibration of structural OH groups in montmorillonites.

Název v anglickém jazyce

Different level of fluorescence in Raman spectra of montmorillonites

Popis výsledku anglicky

The paper presents the study of selected montmorillonite standards by Raman spectroscopy and microscopy supported by elemental analysis, X-ray powder diffraction analysis and thermal analysis. Dispersive Raman spectroscopy with excitation lasers of 532 nm and 780 nm, dispersive Raman microscopy with excitation laser of 532 nm and 100x magnifying lens, and Fourier Transform-Raman spectroscopy with excitation laser of 1064 nm were used for the analysis of four montmorillonites (Kunipia-F, SWy-2, STx-1b and SAz-2). These mineral standards differed mainly in the type of interlayer cation and substitution of octahedral aluminium by magnesium or iron. A comparison of measured Raman spectra of montmorillonite with regard to their level of fluorescence and the presence of characteristic spectral bands was carried out. Almost all measured spectra of montmorillonites were significantly affected by fluorescence and only one sample was influenced by fluorescence slightly or not at all. In the spectra of tested montmorillonites, several characteristic Raman bands were found. The most intensive band at 96 cm(-1) belongs to deformation vibrations of interlayer cations. The band at 200 cm(-1) corresponds to deformation vibrations of the AlO6 octahedron and at 710 cm(-1) can be assigned to deformation vibrations of the SiO4 tetrahedron. The band at 3620 cm(-1) corresponds to the stretching vibration of structural OH groups in montmorillonites.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Vibrational Spectroscopy

ISSN

0924-2031

e-ISSN

—

Svazek periodika

84

Číslo periodika v rámci svazku

May 2016

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

7-15

Kód UT WoS článku

000375819600002

EID výsledku v databázi Scopus

2-s2.0-84959334593