FT-IR/PAS and SEM EDX Studies on Aluminosilicates Modified by Cs(I), Th(IV) and U(VI)

Hubicki, Zbigniew; Zięba, Emil; Wójcik, Grzegorz; Ryczkowski, J.

doi:10.12693/aphyspola.116.312

Cited by 9 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…e FT-IR spectral examination of purified bentonite revealed different bands (Table 2) comparable to those defined by the literature [14][15][16][17][18]. Two bands of different intensities, located at 3632 cm −1 and 3437 cm −1 , also defined by Jeddi et al [19], constitute the spectral signature specific to bentonite which allows its identification in a mixture of species.…”

Section: Datasupporting

confidence: 70%

FT-IR Spectroscopy Applied for Identification of a Mineral Drug Substance in Drug Products: Application to Bentonite

Ouhaddouch

Cheikh

Idrissi

et al. 2019

Journal of Spectroscopy

View full text Add to dashboard Cite

The aim of this study is to prove the effectiveness of IR spectroscopy as an identification test able to discriminate between mineral compounds in mixtures. This work is concerned with the physical characterisation of purified bentonite, bentonite in organic mixtures and organic excipients, and mineralized organic mixture containing bentonite using FT-IR spectroscopy. The different spectra were compared with each other in order to determine fingerprints of bentonite represented by bands located at 3632 cm−1 and 3437 cm−1. The analysis of the spectra of the nonmineralized mixture demonstrates the presence of two bands at 1454 and 2928 cm−1, superimposed on those of the excipients and which disappear after 2 hours of mineralization at 500°C. Finally, we notice a displacement of the stretching band of H2O to the right with increasing the proportion of the excipients.

show abstract

Section: Datasupporting

confidence: 70%

FT-IR Spectroscopy Applied for Identification of a Mineral Drug Substance in Drug Products: Application to Bentonite

Ouhaddouch

Cheikh

Idrissi

et al. 2019

Journal of Spectroscopy

View full text Add to dashboard Cite

show abstract

“…The highest frequency band appears at 1108 cm -1 , which is very weak and can be easily missed. The peak at 916 cm -1 appears at a frequency appreciably lower, indicating a deformation of the Al-Al-OH group, 48,49 compared to the others, reflecting the influence of octahedral Fe and Mg on the spectrum. A vibration of the Al-Mg-OH band was observed at 829 cm -1 and the peak at 750 cm -1 was assigned to Mg-Fe-OH.…”

Section: Characterization Of Muscovitementioning

confidence: 95%

Titanium and iron-modified delaminated muscovite as photocatalyst for enhanced degradation of Tetrabromobisphenol A by visible light

Touaa

Bouberka

Gherdaoui

et al. 2020

Funct. Mater. Lett.

View full text Add to dashboard Cite

A new heterostructured titanium–iron-based material dispersed in alkaline muscovite (Ti–Fe–Mus) was synthesized by a typical impregnation process, and characterized by X-ray diffraction, adsorption/desorption of liquefied nitrogen and thermogravimetric/differential thermal analysis. This characterization suggests that the Ti–Fe–Mus system does not present sufficiently ordered silicate layers, but has a delaminated structure. The specific surface area and porosity have been significantly improved compared to the virgin muscovite, and the outer surface appears to be the dominant active surface. In particular, the Ti–Fe–Mus system was examined as a photocatalyst for the degradation of Tetrabromobisphenol A (TBBPA) selected as a model compound by visible light exposure. The Ti–Fe–Mus system showed excellent photocatalytic activity for TBBPA degradation and optimum catalyst concentration was found at 0.4[Formula: see text]g L[Formula: see text]. More than 60% by weight of parent TBBPA with an initial concentration of 300[Formula: see text]ppm were eliminated after 120[Formula: see text]min at [Formula: see text]. Acid conditions have resulted in a faster elimination compared to alkaline and neutral conditions. Based on these results, it has been shown that titanium and iron modified delaminated muscovite (Ti–Fe–Mus) have strong potential for application as a powerful photocatalyst for the elimination of persistent organic pollutants present in the environment.

show abstract

“…Figure 1a, shows the former a band at 1038 cm À 1 which is due to SiÀ OÀ Si asymmetric stretching vibrations of the SiO 4 tetrahedral [30]. The band at 3632 cm À 1 is due to the MgÀ OHÀ Al, AlÀ OHÀ Al bonding, [31] the band around 1648 cm À 1 is assigned to the hydroxyl group bending vibrations of entrapped water molecules. The bands at 520 and 625 cm À 1 were assigned to SiÀ O bending vibrations.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Immobilized Na₂WO₄.2H₂O on Arginine Modified Bentonite (Bentonite@L‐Arginine‐WO₃): An Efficient and Sustainable Catalyst for the C−C Bond Formation

Taherinia

Ghorbani‐Choghamarani

2021

ChemistrySelect

View full text Add to dashboard Cite

In this study, we have reported the preparation of arginine modified bentonite supported WO3, bentonite@ L‐arginine‐WO3.The structure of the functionalized bentonite was characterized by fourier transform infrared spectroscopy (FT‐IR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), X‐Ray diffraction (XRD), N2 adsorption–desorption isotherm techniques. Thereafter, this new material has been applied as a sustainable catalyst in the C−C bond formation and also heterogeneity of the catalyst was examined by a hot filtration test. Moreover, this catalyst can be easily recovered by centrifuge and reused for at least four cycles without any significant loss of catalyst activity.

show abstract

FT-IR/PAS and SEM EDX Studies on Aluminosilicates Modified by Cs(I), Th(IV) and U(VI)

Cited by 9 publications

References 5 publications

FT-IR Spectroscopy Applied for Identification of a Mineral Drug Substance in Drug Products: Application to Bentonite

FT-IR Spectroscopy Applied for Identification of a Mineral Drug Substance in Drug Products: Application to Bentonite

Titanium and iron-modified delaminated muscovite as photocatalyst for enhanced degradation of Tetrabromobisphenol A by visible light

Immobilized Na₂WO₄.2H₂O on Arginine Modified Bentonite (Bentonite@L‐Arginine‐WO₃): An Efficient and Sustainable Catalyst for the C−C Bond Formation

Contact Info

Product

Resources

About

FT-IR/PAS and SEM EDX Studies on Aluminosilicates Modified by Cs(I), Th(IV) and U(VI)

Cited by 9 publications

References 5 publications

FT-IR Spectroscopy Applied for Identification of a Mineral Drug Substance in Drug Products: Application to Bentonite

FT-IR Spectroscopy Applied for Identification of a Mineral Drug Substance in Drug Products: Application to Bentonite

Titanium and iron-modified delaminated muscovite as photocatalyst for enhanced degradation of Tetrabromobisphenol A by visible light

Immobilized Na2WO4.2H2O on Arginine Modified Bentonite (Bentonite@L‐Arginine‐WO3): An Efficient and Sustainable Catalyst for the C−C Bond Formation

Contact Info

Product

Resources

About

Immobilized Na₂WO₄.2H₂O on Arginine Modified Bentonite (Bentonite@L‐Arginine‐WO₃): An Efficient and Sustainable Catalyst for the C−C Bond Formation