FT-IR studies on intercalates and organic derivatives of crystalline (α- and γ-forms) zirconium phosphate and zirconium phosphate-phosphite

Rajeh, A. O.; Szirtes, L.

doi:10.1007/bf02347293

Cited by 21 publications

(16 citation statements)

References 24 publications

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“…9), it shows its typical characteristic peaks [16]: the peak at 550 cm -1 corresponds to d (PO 4 ), while the peak at 900 cm -1 characterizes a strong H-bond. The band at 1,620 cm -1 belongs to the bending vibrations of water molecules.…”

Section: Resultsmentioning

confidence: 99%

Surfactant-assisted intercalation of crystal violet in layered γ-zirconium phosphate. Dye uptake from aqueous solutions

Alhendawi

Brunet

Payán

et al. 2011

J Incl Phenom Macrocycl Chem

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Batch intercalation experiments have carried out using c-zirconium phosphate (c-ZrP) and one of its cationic surfactant forms (c-ZrP/SUR ? ) for removing crystal violet from aqueous solutions. The intercalation reactions have conducted along two different intervals of time (24 and 48 h). The intercalation process has followed up by X-ray diffractometry (XRD), UV-Visible and FT-IR spectrophotometries. Regarding c-ZrP, XRD patterns show that obtained phases are impure, even after 48 h of the reaction time at a maximum dye loading of 18%. On the other side, c-ZrP/SUR ? gives an impure phase after 24 h while a pure one (2.47 nm) is obtained after 48 h at a maximum dye loading of 19%. In both cases, the observed dye loading values are approximately equal to the one calculated by molecular modeling (ca. 20%). The used analysis approaches prove that dye uptake capacity is a function of the reaction time and inclination angle of the dye molecules inside the solid matrices, where the highest dye uptakes are observed with c-ZrP and c-ZrP/SUR ? after 48 h of the reaction time. This time (48 h) is long enough for the dye molecules to be sufficiently accumulated inside the interlayer regions, in such situation dye molecules are forced to stand up perpendicular to the inorganic layers. With respect to intercalation properties, the difference between c-ZrP and c-ZrP/SUR ? could be referred to the difference between their gallery heights (1.22 and 3.00 nm, respectively). The pre-intercalation of c-ZrP with the surfactant molecules assists the inclusion and intercalation of the huge dye molecules into the interlayer region.

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Section: Resultsmentioning

confidence: 99%

Surfactant-assisted intercalation of crystal violet in layered γ-zirconium phosphate. Dye uptake from aqueous solutions

Alhendawi

Brunet

Payán

et al. 2011

J Incl Phenom Macrocycl Chem

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“…2a contains the intense characteristic peak at 1050 cm À1 , which is assigned to the PeO asymmetric stretching vibration of interlayer PO 4 groups. A broad adsorption band at 3500 cm À1 can be ascribed to the OeH groups stretching vibration of a-ZrP, Another peak at 1640 cm À1 is due to the bending mode of water molecules in the interlayer gallery [23]. The FTIR spectrum of OZrP (Fig.…”

Section: Characterization Of Ozrpmentioning

confidence: 98%

Synthesis of organo-modified α-zirconium phosphate and its effect on the flame retardancy of IFR poly(lactic acid) systems

Liu¹,

Wang²,

Wang³

et al. 2011

Polymer Degradation and Stability

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“…In addition, other characteristic peaks for butylamine are also found. So, the strong peak at 3600-3000 cm -1 region, connected with extra H 2 O and isolate OH and is also with a strong peak of C 4 -NH 2 bond, appears at 1650 cm -1 [21][22]. The strong peak at 630 cm -1 corresponds to the OH group bond and the strong one at 1200 cm -1 is assigned to the H-bonding [21][22].…”

Section: Modified Zirconium Phosphate Intercalatesmentioning

confidence: 99%

Synthesis and Characterization of Expanded Layer-Spacing Zirconium Phosphate by Ion-Exchange and Intercalation Processes

2010

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In a previous work [1], we prepared -Zr(HPO 4 ) 2 .2H 2 O (ZrP) by direct precipitation, reflux, and by sol-gel method. The results of characterization indicated that the properties of the resultant ZrP samples depended on the method and conditions of preparation as well as on the nature of precursor used. As an important factor governing the use of such layered phosphates, various modifications were done to enlarge the interlayer spacing of -ZrP (7.6 Å) to be suitable for exchange of large cations. This work aims to modify the interlayer spacing of -ZrP prepared from zirconium acetylacetonate complex and phosphoric acid. Two routes were used to achieve this goal; the first is by intercalation of acid -ZrP with n-butyl amine in its vapor-saturated atmosphere. The second route is by performing ion-exchange of the -ZrP protons by different cations.

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FT-IR studies on intercalates and organic derivatives of crystalline (α- and γ-forms) zirconium phosphate and zirconium phosphate-phosphite

Cited by 21 publications

References 24 publications

Surfactant-assisted intercalation of crystal violet in layered γ-zirconium phosphate. Dye uptake from aqueous solutions

Surfactant-assisted intercalation of crystal violet in layered γ-zirconium phosphate. Dye uptake from aqueous solutions

Synthesis of organo-modified α-zirconium phosphate and its effect on the flame retardancy of IFR poly(lactic acid) systems

Synthesis and Characterization of Expanded Layer-Spacing Zirconium Phosphate by Ion-Exchange and Intercalation Processes

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