Synthesis of very-fine PbS nanoparticles dispersed homogeneously in MC matrix: effect of concentration on the structural and optical properties of host polymer

Mohamad, Azhin H.; Saeed, Salah Raza; Abdullah, Omed Gh.

doi:10.1088/2053-1591/ab4b9a

Cited by 55 publications

(18 citation statements)

References 62 publications

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“…The increase in the relative intensity of the characteristic peaks of NH 3 NO 3 in the SPEs with increasing salt concentration was attributed to ion association and salt aggregation at the surface of the film, as described by Shuhaimi et al [ 25 ]. A relationship between the intensity of the XRD peaks and the crystallinity has been reported by numerous researchers [ 26 , 27 ]. The percentage of crystallinity (

) was calculated from the following relationship [ 28 , 29 ];

where

and

are the area under the crystalline peaks and the total area of the diffractogram, respectively, which were determined from the deconvolution of the XRD spectra using Fityk software [ 30 ].…”

Section: Resultsmentioning

confidence: 91%

Effect of High Ammonium Salt Concentration and Temperature on the Structure, Morphology, and Ionic Conductivity of Proton-Conductor Solid Polymer Electrolytes Based PVA

Saeed

Abdullah

2020

Membranes

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Polyvinyl alcohol (PVA) based proton-conducting solid polymer electrolyte was prepared with a high salt concentration of ammonium nitrate (NH4NO3) by the technique of solvent casting. From the X-ray diffraction studies, the semicrystalline nature of PVA with the inclusion of NH4NO3 was studied. XRD analysis indicates that the highest ion conductive sample exhibits the minimum crystalline nature. The decreasing trend of Jonscher-exponent with temperature rise reveals that the present system is insured by the correlated barrier hopping (CBH) model. The maximum room temperature conductivity was found to be 5.17 × 10−5 S/cm for PVA loaded 30 wt.% of NH4NO3. The ionic transport of the proton-conducting solid polymer electrolyte was studied at the temperature range of 303–353 K. The conductivity-temperature relationship of the systems was analyzed using both the Arrhenius and Vogel–Tammann–Fulcher (VTF) models to explain the ionic hopping mechanism for the system.

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) was calculated from the following relationship [ 28 , 29 ];

where

and

are the area under the crystalline peaks and the total area of the diffractogram, respectively, which were determined from the deconvolution of the XRD spectra using Fityk software [ 30 ].…”

Section: Resultsmentioning

confidence: 91%

Effect of High Ammonium Salt Concentration and Temperature on the Structure, Morphology, and Ionic Conductivity of Proton-Conductor Solid Polymer Electrolytes Based PVA

Saeed

Abdullah

2020

Membranes

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“…Among these approaches, the dispersion of a small amount of inorganic nano-sized fillers into the polymer electrolyte matrix has captured escalating interest by many researchers due to their high efficiency in improving the room-temperature ionic conductivity of an electrolyte system [8,9]. The overall impact of presenting nanosized inorganic fillers in SPEs depends on several factors, such as the type, shape, size, and concentration of nano-filler, as well the way in which the fillers are distributed and dispersed in the matrix [10,11].…”

Section: Introductionmentioning

confidence: 99%

Effect of ZnO Nanoparticle Content on the Structural and Ionic Transport Parameters of Polyvinyl Alcohol Based Proton-Conducting Polymer Electrolyte Membranes

et al. 2021

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Proton conducting nanocomposite solid polymer electrolytes (NSPEs) based on polyvinyl alcohol/ammonium nitrate (PVA/NH4NO3) and different contents of zinc oxide nanoparticles (ZnO-NPs) have been prepared using the casting solution method. The XRD analysis revealed that the sample with 2 wt.% ZnO-NPs has a high amorphous content. The ionic conductivity analysis for the prepared membranes has been carried out over a wide range of frequencies at varying temperatures. Impedance analysis shows that sample with 2 wt.% ZnO-NPs has a smaller bulk resistance compared to that of undoped polymer electrolyte. A small amount of ZnO-NPs was found to enhance the proton-conduction significantly; the highest obtainable room-temperature ionic conductivity was 4.71 × 10−4 S/cm. The effect of ZnO-NP content on the transport parameters of the prepared proton-conducting NSPEs was investigated using the Rice–Roth model; the results reveal that the increase in ionic conductivity is due to an increment in the number of proton ions and their mobility.

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“…The analysis of optical characteristics of the materials is a valuable method for investigating the band structure as well as the density of electronic states [35]. The optical features of polymer blends are often changed by mixing with filler [31].…”

Section: Optical Propertiesmentioning

confidence: 99%

Microstructure Study And Linear/Nonlinear Optical Properties of Bi-Embedded PVP/ PVA Films For Optoelectronic And Optical CUT-OFF Applications

Ali

Abdelaziz

Sayed

et al. 2022

Preprint

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Hybrid polymer films of polyvinyl pyrrolidone (PVP)/ polyvinyl alcohol (PVA) embedded with gradient levels of Bi-powder were prepared using a conventional solution casting process. X-ray diffraction (XRD), Fourier transform infrared spectroscopic (FT-IR), and Scanning electron microscope (SEM) techniques have been used to examine the micro/molecular structural and morphological of the synthesized flexible films. The XRD peak intensity and FTIR spectra of the PVA gradually decline as Bi-metal is introduced. In addition, filler changes the microstructure surface of the pure film. The modification in the microstructure leads to an enhancement in the optical characteristic of the blend films. The indirect allowed transition energy was calculated via Tauc's and ASF models. The decrease in the hybrid film’s bandgap (\({E}_{gi}^{opt}\)) returns to the localized states in the forbidden region, as illustrated by the Urbach energy (Eu) values. The optical absorption parameters, including absorption coefficient (α) and edge (Ee), have also been evaluated. The relation between the transition energy and the refractive index (n) was studied. The rise of Bi-metal concentrations leads to an improvement in the nonlinear (χ(3)) susceptibility and (n2) refractive parameters. The optical limiting characteristics (OLC) revealed that the higher concentration dopant films reduce the light transmission intensity. The results suggest that hybrid films are promising materials in a wide range of applications, especially optical devices, and optoelectronics.

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Synthesis of very-fine PbS nanoparticles dispersed homogeneously in MC matrix: effect of concentration on the structural and optical properties of host polymer

Cited by 55 publications

References 62 publications

Effect of High Ammonium Salt Concentration and Temperature on the Structure, Morphology, and Ionic Conductivity of Proton-Conductor Solid Polymer Electrolytes Based PVA

Effect of High Ammonium Salt Concentration and Temperature on the Structure, Morphology, and Ionic Conductivity of Proton-Conductor Solid Polymer Electrolytes Based PVA

Effect of ZnO Nanoparticle Content on the Structural and Ionic Transport Parameters of Polyvinyl Alcohol Based Proton-Conducting Polymer Electrolyte Membranes

Microstructure Study And Linear/Nonlinear Optical Properties of Bi-Embedded PVP/ PVA Films For Optoelectronic And Optical CUT-OFF Applications

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