Chemical preparation, crystallographic characterization, thermal behavior and IR studies of two new cyclotriphosphates SrKP3O9·3H2O and SrKP3O9

Belaaouad, Saïd; Charaf, A.; Kababi, Khadija El; Radid, M.

doi:10.1016/j.jallcom.2007.12.100

Cited by 12 publications

(6 citation statements)

References 16 publications

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“…A large broad absorption around 3380-1639 cm −1 represents asymmetrical stretching and bending vibrations of the OH group, respectively. e FTIR spectra of QC-MC confirm the existence of Quartz in the peaks 1038 cm −1 , 983 cm −1 , and 779 cm −1 which are due to Si-O symmetric stretching and bending [23][24][25]. Calcite was also detected in QC-MC at 1425 cm −1 and 1246 cm −1 , which are signified to doubly degenerate asymmetric stretching and C�O stretching, respectively [25,26]; the frequency of 876 cm −1 is due to Al-O-H stretching mode vibration signified to the presence of mica [27,28].…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 79%

Studies on the Removal of Cadmium Toxic Metal Ions by Natural Clays from Aqueous Solution by Adsorption Process

Bassam

Hallaoui

Alouani

et al. 2021

Journal of Chemistry

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The aim of this study is the valorization of the Moroccan clays (QC-MC and QC-MT) from the Middle Atlas region as adsorbents for the treatment of water contaminated by cadmium Cd (II) ions. The physicochemical properties of natural clays are characterized by ICP-MS, XRD, FTIR, and SEM techniques. The adsorption process is investigated as a function of adsorbent mass, solution pH, contact time, temperature, and initial Cd (II) ion concentration. The kinetic investigation shows that the adsorption equilibrium of Cd (II) ions by both natural clays is reached after 30 min for QC-MT and 45 min for QC-MC and fits well to a pseudo-second-order kinetic model. The isotherm study is best fitted by a Freundlich model, with the maximum adsorption capacity determined by the linear form of the Freundlich isotherm being 4.23 mg/g for QC-MC and 5.85 mg/g for QC-MT at 25°C. The cadmium adsorption process was thermodynamically spontaneous and exothermic. The regeneration process showed that these natural clays had excellent recycling capacity. Characterization of the Moroccan natural clays before and after the adsorption process through FTIR, SEM, XRD, and EDX techniques confirmed the Cd (II) ion adsorption on the surfaces of both natural clay adsorbents. Overall, the high adsorption capacity of both natural clays for Cd (II) ions removal compared to other adsorbents motioned in the literature indicated that these two natural adsorbents are excellent candidates for heavy metal removal from aqueous environments.

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Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 79%

Studies on the Removal of Cadmium Toxic Metal Ions by Natural Clays from Aqueous Solution by Adsorption Process

Bassam

Hallaoui

Alouani

et al. 2021

Journal of Chemistry

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“…During the thermal behavior studies of triphosphates M II Na 3 P 3 O 10 ·12H 2 O of sodium and divalent cations M II ( M II =Cu 2+ , Co 2+ , Zn 2+ , Mn 2+ , Cd 2+ , Mg 2+ , and Ni 2+ ) by Jouini (1983) and Jouini et al (1984), a new form triphosphate CuNa 3 P 3 O 10 ·12H 2 O was reported. Systematic investigations of cyclotriphosphates of strontium and monovalent cations Sr M I P 3 O 9 ·3H 2 O ( M I =K + , Tl + , Rb + , and NH 4 + ) were also reported (Sbai et al , 2002, 2003; Belaaouad 2002; Belaaouad et al , 2000, 2009; El Kababi, 2000; El Kababi et al , 2000).…”

Section: Introductionmentioning

confidence: 94%

“…The present paper reports the chemical preparation and the XRD data for a new triphosphate CuNa 3 P 3 O 10 and two cyclotriphosphates SrRbP 3 O 9 ·3H 2 O and SrRbP 3 O 9 . It should be noted that SrRbP 3 O 9 ·3H 2 O (El Kababi et al , 2000) is isostructural with SrNH 4 P 3 O 9 ·3H 2 O (Belaaouad et al , 2000), SrTlP 3 O 9 ·3H 2 O (Sbai et al , 2002), and SrKP 3 O 9 ·3H 2 O (Belaaouad et al , 2009). The crystal structures of SrRbP 3 O 9 and CuNa 3 P 3 O 10 have not been previously reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Chemical preparation and XRD data for a new triphosphate CuNa₃P₃O₁₀ and two cyclotriphosphates SrRbP₃O₉·3H₂O and SrRbP₃O₉

et al. 2011

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Methods of chemical preparation and XRD data are reported for a new triphosphate CuNa3P3O10 and two cyclotriphosphates SrRbP3O9·3H2O and SrRbP3O9. SrRbP3O9·3H2O was prepared by the method of ion-exchange resin, while CuNa3P3O10 and SrRbP3O9 were obtained by total dehydration of CuNa3P3O10·12H2O and SrRbP3O9·3H2O, respectively. CuNa3P3O10 crystallizes in the hexagonal system, with space group P-31c, Z=2, and the following unit-cell dimensions: a=b=7.022(1) Å, c=9.217(1) Å, M(20)=81, F(20)=117(0.003 419, 50), and V=393.24(2) Å3. SrRbP3O9·3H2O is orthorhombic, with Z=4, space group Pnma, and the following unit-cell dimensions: a=9.120(1) Å, b=8.141(1) Å, c=15.234(1) Å, M(20)=5.1, F(20)=5.8(0.0173,199), and V=1131.1(3) Å3. SrRbP3O9 is monoclinic, with space group P21/m or P21, Z=4, and the following unit-cell dimensions: a=14.958(3) Å, b=8.503(2) Å, c=7.898(2) Å, β=122.19(2)°, M(20)=9.9, F(20)=16.5(0.0189, 64), and V=850.2(8) Å3.

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“…The band at 3568 cm -1 is attributed to the stretching vibrations of water molecules (νO-H). The band at 2400 cm -1 corresponds to hydrogen bonding [23]. The band at 1611 cm -1 represents the bending vibration of water molecules (δHOH).…”

mentioning

confidence: 99%

“…3. IR spectra of the phosphates (a) SrKP 3 O 9 •3H 2 O, (b) amorphous phase,(c) SrKP 3 O 9 and (d) SrK 2 P 4 O 12 + γ[Sr(PO 3 ) 2 ][23,42]…”

mentioning

confidence: 99%

Chemical preparations, crystal data for monophosphates and condensed phosphates associated to strontium and IR studies of their anions

2020

IJETER

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Chemical preparations and main crystallographic data are reported for the Monophosphates and the condensed phosphates associated to strontium. These compounds constituting an important part of phosphate chemistry have been subject to many studies and applications in many fields of research on materials and industry. The subject of this paper is to collect unit-cell parameters of these compounds to build a database of the different formulas which are known until now, to have an idea about their preparations and also about characterization by infrared vibration spectrometry for anions, PO 3 in α-Sr(PO 3 )

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Chemical preparation, crystallographic characterization, thermal behavior and IR studies of two new cyclotriphosphates SrKP3O9·3H2O and SrKP3O9

Cited by 12 publications

References 16 publications

Studies on the Removal of Cadmium Toxic Metal Ions by Natural Clays from Aqueous Solution by Adsorption Process

Studies on the Removal of Cadmium Toxic Metal Ions by Natural Clays from Aqueous Solution by Adsorption Process

Chemical preparation and XRD data for a new triphosphate CuNa₃P₃O₁₀ and two cyclotriphosphates SrRbP₃O₉·3H₂O and SrRbP₃O₉

Chemical preparations, crystal data for monophosphates and condensed phosphates associated to strontium and IR studies of their anions

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Chemical preparation, crystallographic characterization, thermal behavior and IR studies of two new cyclotriphosphates SrKP3O9·3H2O and SrKP3O9

Cited by 12 publications

References 16 publications

Studies on the Removal of Cadmium Toxic Metal Ions by Natural Clays from Aqueous Solution by Adsorption Process

Studies on the Removal of Cadmium Toxic Metal Ions by Natural Clays from Aqueous Solution by Adsorption Process

Chemical preparation and XRD data for a new triphosphate CuNa3P3O10 and two cyclotriphosphates SrRbP3O9·3H2O and SrRbP3O9

Chemical preparations, crystal data for monophosphates and condensed phosphates associated to strontium and IR studies of their anions

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Chemical preparation and XRD data for a new triphosphate CuNa₃P₃O₁₀ and two cyclotriphosphates SrRbP₃O₉·3H₂O and SrRbP₃O₉