The Optical Characterization Of Polyvinyl Alcohol: Cobalt Nitrate Solid Polymer Electrolyte Films

Abdullah, Omed Gh.; Saber, Dlear R.; Taha, Sherzad A.

doi:10.5185/amlett.2015.5687

Cited by 21 publications

(6 citation statements)

References 1 publication

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“…The whole assembly was placed in a dust free chamber and the solvent was allowed to evaporate slowly in open air at room temperature for a week and films are peeled off from the glass dish. The thicknesses of the films were in the range of (0.03 -0.18) mm [7].…”

Section: Materials and Preparation Of Polymer Electrolyte Filmsmentioning

confidence: 99%

Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH4NO3 Solid Polymer Electrolyte Films

Manjunath¹,

Deepa²,

Supreetha³

et al. 2015

AMPC

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Solid polymer electrolytes have been extensively studied due to wide applications in various electrochemical devices [1]-[3]. Most of the solid polymer electrolytes consist of polymer as a host material to provide strength and good mechanical stability and an inorganic salt that supplies ionic carriers to cause electrical conductivity. In our studies, we prepared PVA/NH 4 NO 3 polymer electrolyte films by solution casting method. The prepared films with varied Ammonium Nitrate concentration from 0-20 wt% are characterized by XRD & FTIR spectroscopy. XRD results show that amorphous nature increases as the amount of the Ammonium Nitrate salt in PVA is increased. IR-spectra confirm the polymer salt complexes in the range of 3700-712 cm −1. Conductance analysis reveals that polymer electrolyte films containing 20 wt% of NH 4 NO 3 exhibit the highest ionic conductivity of 1.01 × 10 −7 S/cm while pure PVA films give the lowest ionic conductivity of 2.10 × 10 −11 S/cm. It was evident from this study that the increase of ionic conductivity depended on the Ammonium Nitrate salt concentration. The dielectric constant exponentially decreases with increase of frequency for pure PVA and NH 4 NO 3 doped PVA film composites. The temperature dependent studies of AC conductivity and dielectric constant also included to understand the conducting property. The results obtained by these studies are reported in this work.

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Section: Materials and Preparation Of Polymer Electrolyte Filmsmentioning

confidence: 99%

Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH4NO3 Solid Polymer Electrolyte Films

Manjunath¹,

Deepa²,

Supreetha³

et al. 2015

AMPC

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“…Analysis of the absorption spectra in the lower energy portion gives information about atomic vibrations while the higher energy portion of the spectrum gives knowledge about the electronic states in the atom [5,6]. Therefore, an accurate measurement of optical constants is extremely important.…”

Section: Introductionmentioning

confidence: 99%

Optical and structural investigation of synthesized PVA/PbS nanocomposites

Abdullah

Tahir

Kadir

2015

J Mater Sci: Mater Electron

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Polymer nanocomposite based on polyvinyl alcohol (PVA) and lead sulfide (PbS) in the average radius of (1.88-2.23) nm, have been synthesized using the chemical reduction rote and solution casting technique for different concentrations of PbS. The characterization of the polymer nanocomposite films were carried out using UVvisible spectroscopy, SEM, and XRD. The effect of various concentration of PbS NP on the optical properties of the composite has been studied to understand the optimum conditions for the synthesis process. The nanocomposite film shows high UV and visible light absorptions in the wavelength range of (200-500) nm, which correspond to the characteristics of the PbS NPs. The significant decreasing trend of the direct allowed band gap of the nanocomposite was observed upon increasing the Pb source concentration, from (6.27 eV) for pure PVA to (2.34 eV) for 0.04 M PbS concentration, which is much higher than the energy gap of bulk PbS value (0.41 eV). The calculated values of the static refractive index of Cauchy dispersion model were in the range of (1.09-1.20).X-ray diffraction analysis confirmed the cubic nanocrystalline PbS phase formation.

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“…The change in peak intensity and a shift in the position of the MC peaks upon increasing Co(NO 3 ) 2 concentration reveal the formation of the charge transfer complexes within the polymer electrolyte samples . The same behavior was observed after incorporation of the different salts like ammonium fluoride (NH 4 F), sodium iodide (NaI) to form solid polymer electrolytes based on MC.…”

Section: Resultsmentioning

confidence: 60%

Surfaces modification of methylcellulose: Cobalt nitrate polymer electrolyte by sulfurated hydrogen gas treatment

Abdullah

Aziz

et al. 2018

J of Applied Polymer Sci

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This article discusses the surface modification of methylcellulose:nitrate cobalt [MC:Co(NO3)2] through the sulfurated hydrogen (H2S) gas treatment. Solution cast technique has been used to fabricate MC:Co(NO3)2‐based solid polymer electrolytes. The results achieved for structural, morphological and optical properties indicate that H2S gas treatment is crucial for modification of polymer electrolytes to polymer composites. The morphological appearance revealed that the H2S gas treatment produced cobalt sulfide (CoS) nanoparticles on the surface of the films. The results of X‐ray diffraction indicate the disruption of the crystalline phase of the MC polymer upon addition of various amounts of Co(NO3)2 salt. The optical absorption spectra of the electrolyte samples shifted to higher wavelengths with increasing the cobalt nitrate salt concentration. The optical band gap of MC incorporated with 40 wt % Co(NO3)2 concentration was 4.69 and reduced to 4.52 eV after H2S surface treatment. The linear relationship between the refractive index and salt concentration supports the uniform distribution of the developed nanoparticles appeared in STM images. The significant change in intensity and position of Fourier transform infrared transmittance bands is an evidence for the formation of charge transfer complex between the added salt and the MC host polymer. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46676.

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The Optical Characterization Of Polyvinyl Alcohol: Cobalt Nitrate Solid Polymer Electrolyte Films

Cited by 21 publications

References 1 publication

Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH<sub>4</sub>NO<sub>3</sub> Solid Polymer Electrolyte Films

Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH<sub>4</sub>NO<sub>3</sub> Solid Polymer Electrolyte Films

Optical and structural investigation of synthesized PVA/PbS nanocomposites

Surfaces modification of methylcellulose: Cobalt nitrate polymer electrolyte by sulfurated hydrogen gas treatment

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The Optical Characterization Of Polyvinyl Alcohol: Cobalt Nitrate Solid Polymer Electrolyte Films

Cited by 21 publications

References 1 publication

Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH&lt;sub&gt;4&lt;/sub&gt;NO&lt;sub&gt;3&lt;/sub&gt; Solid Polymer Electrolyte Films

Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH&lt;sub&gt;4&lt;/sub&gt;NO&lt;sub&gt;3&lt;/sub&gt; Solid Polymer Electrolyte Films

Optical and structural investigation of synthesized PVA/PbS nanocomposites

Surfaces modification of methylcellulose: Cobalt nitrate polymer electrolyte by sulfurated hydrogen gas treatment

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Product

Resources

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Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH<sub>4</sub>NO<sub>3</sub> Solid Polymer Electrolyte Films

Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH<sub>4</sub>NO<sub>3</sub> Solid Polymer Electrolyte Films