Effect of very fine nanoparticle and temperature on the electric and dielectric properties of MC-PbS polymer nanocomposite films

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

doi:10.1016/j.rinp.2019.102898

Cited by 46 publications

(24 citation statements)

References 63 publications

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“…Figure 4 shows the relation of the real part (

) and the imaginary part (

) of complex impedance for pure PVA and PVA/NH 4 NO 3 proton-conducting SPE films with different concentration of NH 4 NO 3 at two temperatures, 303 and 353 K. The Cole-Cole plots for PVA/NH 4 NO 3 proton-conducting SPE films showed one semicircle arc that is followed by a spike at high temperature, which indicates a parallel combination of resistance and a capacitance in series [ 39 ]. Monitoring of a single semicircular arc for all SPEs is an indication of only one type of relaxation strategy existing in this system [ 40 ]. The intercept of the semicircle arc in the Cole-Cole plot with the real axis at the lower frequency end is usually used to determine the bulk resistance of SPE.…”

Section: Resultsmentioning

confidence: 99%

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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“…Figure 4 shows the relation of the real part (

) and the imaginary part (

Section: Resultsmentioning

confidence: 99%

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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“…This novel result is highly valuable in optical applications as filters, sensors and glasses. The optical energy bandgap (E g ) values of the polymeric composite films are determined from the absorbance data by Swapole formula [4,41]:…”

Section: Optical Analysismentioning

confidence: 99%

Enhancement of the optical properties of PVP using Zn1-xSnxS for UV-region optical applications

Badawi

2021

Appl. Phys. A

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The optical properties of polyvinylpyrrolidine (PVP) polymer have been enhanced using ternary Zn 1-x Sn x S as a filler for UVregion optical applications. Solution casting technique is used to prepare different Sn molar ratios (x: 0-0.3) in Zn 1-x Sn x S filled PVP polymeric composite films (1.0 wt.%). SEM, FT-IR and UV-visible-NIR spectrophotometry is utilized to characterize the optical properties of the plain PVP and polymeric composite films. SEM images reveal the homogeneous dispersion of the filler (Zn 1-x Sn x S) in the host PVP matrix. The FT-IR spectroscopic measurements ensure the successful interaction of ternary Zn 1-x Sn x S material and the host PVP polymer. The cut off transmittance edge is shifted from 260 nm (host PVP) to 390 nm (polymeric composite). The direct optical energy bandgap of the prepared polymeric composite films are shifted from 4.78 eV (plain PVP) to 3.45 eV for Zn 0.7 Sn 0.3 S polymeric composite film. An enhancement of the refractive index (n) and the optical conductivity (σ opt.) of the polymeric composite films is achieved as compared with those of the plain one. The single oscillator (E 0) and dispersion (E d) energies of the polymeric composite films were determined using Wemple and DiDomenico (WDD) model. The prepared polymeric composite films are strongly recommended for UV-region optical applications.

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“…The average value of σ DC for all prepared samples is tabulated in Table 1. The increases in σ DC with the addition of ZnO-NPs could be related to the increase in both the number and mobility of free carriers in the matrix by increasing the degree of salt dissociation of ion aggregates, and increasing the amorphous phase content, respectively [34,35]. The temperature-dependence of ionic conductivity has been employed to analyze the possible ion-conduction mechanism in the present proton-conducting NSPEs.…”

Section: Conductivity Analysismentioning

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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Effect of very fine nanoparticle and temperature on the electric and dielectric properties of MC-PbS polymer nanocomposite films

Cited by 46 publications

References 63 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

Enhancement of the optical properties of PVP using Zn1-xSnxS for UV-region optical applications

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

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