Synthesis and Characterization of Novel Organo‐Inorganic Hybrid Material of Poly(3,4‐Ethylene Dioxythiophene) and PhosphomolybdateAnion

Murugan, A. Vadivel; Kwon, Chai-Won; Campet, G.; Kale, Bharat B.

doi:10.1080/0882751031000073896

Cited by 13 publications

(5 citation statements)

References 9 publications

(9 reference statements)

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“…Appearing usually around 932 cm − 1 [43], or 962-963 cm − 1 [44,45] in phosphomolybdate-based compounds and composites, in the present case M--O stretching is observed at ~901 cm − 1 after molybdate sorption onto P-APEI.…”

Section: Ftir Spectroscopymentioning

confidence: 50%

Development of phosphoryl-functionalized algal-PEI beads for the sorption of Nd(III) and Mo(VI) from aqueous solutions – Application for rare earth recovery from acid leachates

Wei

Salih

Rabie

et al. 2021

Chemical Engineering Journal

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Alginate-PEI beads are functionalized by phosphorylation and applied for the sorption of Nd(III) and Mo(VI). The successful grafting of phosphoryl groups (as tributyl phosphate derivative) is characterized by FTIR and XPS analysis, elemental analysis, titration (pH PZC ), TGA, BET and SEM-EDX analyses. The multi-functional characteristics of the sorbent (i.e., carboxylic, hydroxyl, amine and phosphate groups) contribute in the binding of metal ions having different physicochemical behaviors. The sorption of Nd(III) is strongly increased by phosphorylation, while for Mo(VI) the enhancement is rather limited. Optimum sorption occurs at pH 3-4: maximum sorption capacity reaches up to 1.46 mmol Nd(III) g − 1 and 2.09 mmol Mo(VI) g − 1 ; sorption isotherms are fitted by the Langmuir equation. The equilibrium is reached within 30-40 min and the kinetic profiles are simulated by the pseudo-first order rate equation. The coefficients of the effective diffusivity are close to the self-diffusivity of Nd(III) and Mo(VI) in water; as a confirmation of the limited impact of resistance to intraparticle diffusion in the kinetic control. The sorbent is selective for Nd(III) over Mo(VI) and other alkali-earth or base metals (at pH close to 2.5-3). Metals can be readily desorbed using 0.2 M HCl/0.5 M CaCl 2 as the eluent. The loss in sorption does not exceed 5% at the fifth cycle, while desorption remains complete. A series of treatments (including acidic leachate, cementation, precipitation, sorption and elution) is successfully applied for the recovery of rare earths from Egyptian ore; with enrichment in the oxalate precipitate of Nd(III), Gd(III), Sm(III) and Eu(III).

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Section: Ftir Spectroscopymentioning

confidence: 50%

Development of phosphoryl-functionalized algal-PEI beads for the sorption of Nd(III) and Mo(VI) from aqueous solutions – Application for rare earth recovery from acid leachates

Wei

Salih

Rabie

et al. 2021

Chemical Engineering Journal

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“…The above phenomena indicate not only the existence of SiW 11 polyanions but also extremely obvious differences in the environment of SiW 11 polyanions between SiW 11 –PEDOT hybrid material and pure SiW 11 . It is considered as SiW 11 polyanions dispersed in the polymer matrix, where they would be surrounded by positively charged PEDOT, as mentioned in previous work . As depicted by Fernandes, electropositive PEDOT and SiW 11 polyanions interacted with each other by electrostatic interaction during the electropolymerization process.…”

Section: Results and Discussionmentioning

confidence: 97%

Electropolymerization Polyoxometalate (POM)-Doped PEDOT Film Electrodes with Mastoid Microstructure and Its Application in Dye-Sensitized Solar Cells (DSSCs)

Yuan

Guo

Wang

et al. 2013

Ind. Eng. Chem. Res.

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A polyoxometalate (POM)-doped poly(3,4-ethylenedioxythiophene) (PEDOT) hybrid film counter electrode was successfully fabricated by electropolymerization in an environmentally friendly aqueous solution. The hybrid film presents a similar surface morphology to lotus leaf, the microstructure of which is a regularly distribution of mastoid shapes. As far as we know, it is the first time that POM-PEDOT hybrid film with mastoid morphology was fabricated. The application of the hybrid film counter electrodes (CEs) in dye-sensitized solar cells (DSSCs) was studied for the first time, and the efficiency of DSSCs based on hybrid film CEs was almost as high as DSSCs with Pt CEs. FTIR results indicated that POM polyanions had already been dispersed into the PEDOT matrix. Cyclic voltammetry, electrochemical impedance spectroscopy, and Tafel polarization test results show that the electrocatalytic ability for I3 – reduction of the hybrid film CE is comparable to that of a Pt CE. In addition, the SiW11–PEDOT hybrid film has good electrochemical stability.

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“…As shown from Figure 2, FTIR spectral signature of "-CD:PMA" exhibited four characteristic bands for PMA around 1030, 941, 856 and 755 cm −1 with a shift to lower frequencies instead of 1064, 962, 869 and 787 [31], probably due to the formation of hydrogen bond C−H···OMo] [30]. Meanwhile, the strong peaks present at 2926, 1640, 1157 cm −1 are characteristics of -CD and the broad peak with high intensity around 3413 cm −1 is corresponding to-OH of -CD [32].…”

Section: Synthesis and Characterization Of Sensing Element; β-Cyclodementioning

confidence: 96%

Potentiometric sensing platform for selective determination of Pregabalin in pharmaceutical formulations

El-Naby¹

2019

Open J Anal Bioanal Chem

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Pregabalin is a structural analogue of, but functionally unrelated to, the naturally occurring neurotransmitter -aminobutyric acid (GABA) with potent analgesic, anticonvulsant and anxiolytic activity.The abuse potential of pregabalin is a well-documented with high risk of addiction that may be fatal with overdoses particularly, among opiate addicts and polydrug use dependency syndrome, consequently, it is very pertinent to determine pregabalin in a sensitive and selective manner. Herein, for the fi rst time the use of β-cyclodextrin:phosphomolybdic acid organic-inorganic hybrid material as a neutral ionophore in polymeric membrane based selective sensors for the determination of pregabalin in its pharmaceutical formulations has been reported. The fabricated sensors yielded an excellent performance, with a linear range from 1.0×10 6 to 1.0×10 1 M pregabalin, a response slope closer to the ideal Nernstian value; 59.6 mV per decade as well as a detection limit was 6.0×10 7 M and very short response time of about 5 s for high concentrations. The most interesting feature of the sensors is their remarkably selective recognition for pregabalin compared with opioids and this is an important issue that is suited to practical applications. The sensors were effectively used for the determination of pregabalin in pharmaceutical formulations with a recovery of 100.97%±0.17. On comparison with β-cyclodextrin, the proposed sensors exhibited the best performance characteristics.

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Synthesis and Characterization of Novel Organo‐Inorganic Hybrid Material of Poly(3,4‐Ethylene Dioxythiophene) and PhosphomolybdateAnion

Cited by 13 publications

References 9 publications

Development of phosphoryl-functionalized algal-PEI beads for the sorption of Nd(III) and Mo(VI) from aqueous solutions – Application for rare earth recovery from acid leachates

Development of phosphoryl-functionalized algal-PEI beads for the sorption of Nd(III) and Mo(VI) from aqueous solutions – Application for rare earth recovery from acid leachates

Electropolymerization Polyoxometalate (POM)-Doped PEDOT Film Electrodes with Mastoid Microstructure and Its Application in Dye-Sensitized Solar Cells (DSSCs)

Potentiometric sensing platform for selective determination of Pregabalin in pharmaceutical formulations

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