Structural, optical, electrical, and DFT studies of chitosan/polyvinyl alcohol composite doped with mixed nanoparticles (GO/TiO2) for flexible energy-storage devices

Algethami, Norah

doi:10.1007/s10854-022-09252-z

Cited by 10 publications

(8 citation statements)

References 37 publications

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“…In addition, the decrease and the observed shift in the OH/ NH peak (3200-3550 cm -1 ) suggest the formation of non-covalent bonds among ST, Ga 3+ , Ce 3+ , Nd 3+ and the OH/NH functional groups of the blend [25]. In summary, the peaks shift and the observed changes in the spectra (peaks intensity) or the disappearance of certain bands indicate the ability of the blend to experience intramolecular and intermolecular interactions with ST and the dissociated salt [12,31].…”

Section: Ftir Spectroscopymentioning

confidence: 87%

“…Moreover, the rare Earth ions were more efficient in X C reduction, being in the range of 13%-18%. This indicates that Ce 3+ , Nd 3+ , and Er 3+ interact more strongly than Ga 3+ , and destroying the steric (spatial) regularity of PVA-Ch blend chains, increasing the degree of amorphousness inside the blend [31]. Similarly, the incorporation of 5.0% CoCl 2 reduced the X C of PEO from 75.5% to 39.4% [14].…”

Section: Xrd Analysismentioning

confidence: 99%

“…Salma and Rudramadevi [24] reported the reduction of E g id of the PVA-PVP blend from 5.0 to 4.6 eV upon loading Sm 3+ with contents up to 0.5 wt%. Algethami [31] reported E g d (E g id ) values of 5.4 eV (5.01 eV) for PVA (30%)-Ch(70%) blend, that reduced to 4.46 eV (3.49 eV) after codoping with (5% GO + 5% TiO 2 ).…”

Section: Abs Tmentioning

confidence: 99%

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M³⁺/NaTiO₃/PVA–chitosan nanocomposites (M = Ga, Ce, Nd or Er): novel solid polymer electrolytes for supercapacitors

Alanazi

Sayed

2023

Phys. Scr.

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Designing flexible and thermally stable solid polymer-electrolyte (SPE) -based green materials for energy storage devices is an interesting approach from environmental and technological points of view. In this paper, NaTiO3 (ST) nanofibers of diameters in the range of 4.88–9.48 nm were hydrothermally prepared and loaded into the poly(vinyl alcohol)–chitosan (PVA–Ch) bio-blend via solution casting. Additionally, the obtained nanocomposite solution was mixed with Ga3+ and rare earths (Ce3+, Nd3+, or Er3+) for preparing novel solid polymer electrolyte films. XRD results indicated the semicrystalline nature of all samples, and the degree of crystallinity decreased after loading these additives. FE-SEM and EDS were used to investigate the surface morphology, fracture cross-section and the elemental chemical composition. FTIR analysis confirmed the complexation and complete dissociation of the salts inside the blend. UV-vis spectroscopy showed that the optical band gap of the films was reduced from 4.4 eV to 3.5 eV, and the refractive index is in the range of 2.376–2.648. The thermo-gravimetric analysis (TGA) revealed that the samples are thermally stable until 200 ℃, and the maximum decomposition occurs in the temperature range 255–300 ℃. In addition, four endothermic peaks were detected in the differential scanning calorimetry thermograms. Dielectric properties were measured in the frequency range of 100 Hz–8.0 MHz and at temperatures in the range of 30–120 ℃. The dielectric constant and ac conductivity were greatly improved due to doping with ST and mixing the salts. The small dielectric loss associated with the improvements in the dielectric constant and ac conductivity suggest the use of the ST/blend and salts/ST/blend films for energy storage devices and related applications.

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Section: Ftir Spectroscopymentioning

confidence: 87%

Section: Xrd Analysismentioning

confidence: 99%

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M³⁺/NaTiO₃/PVA–chitosan nanocomposites (M = Ga, Ce, Nd or Er): novel solid polymer electrolytes for supercapacitors

Alanazi

Sayed

2023

Phys. Scr.

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“…Algethami employed the ab initio calculations to investigate the effect of different nanoparticles on the electronic and structural properties of the polymer matrix. The findings from the study, suggest that the introduction of nanoparticles can significantly enhance the ionic conductivity performance of polymer nanocomposites 36 . When using DFT to investigate polymer nanocomposites for energy storage, it is important to consider the choice of exchange‐correlation functional and the size of the supercell used in the calculations.…”

Section: Introductionmentioning

confidence: 99%

“…The findings from the study, suggest that the introduction of nanoparticles can significantly enhance the ionic conductivity performance of polymer nanocomposites. 36 When using DFT to investigate polymer nanocomposites for energy storage, it is important to consider the choice of exchange-correlation functional and the size of the supercell used in the calculations. The use of hybrid functions or dispersion corrections may be a desirable and necessary route to accurately, capture the interactions between the polymer matrix and the nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Density functional theory investigation of the energy storage potential ofgraphene‐polypyrrolenanocomposites as high‐performance electrode for Zn‐ion batteries

Adedoja,

Sadiku,

Hamam

2023

Polymer Engineering & Sci

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The present research explores, through the density functional theory (DFT) calculations, the viability of graphene‐polypyrrole (G/PPy) nanocomposites as an effective material for energy storage in Zn‐ion batteries. To this end, the CASTEP calculator in the Materials Studio software was employed to examine the electronic and structural properties of the nanocomposites and their potential to enhance energy storage capabilities of Zn‐ion batteries. Specifically, the study investigates the interaction of the Zn‐adatom with the nanocomposites, electronic properties, specific capacity, Zn adatom diffusion behavior, structural, and thermal stability, as well as the mechanisms through which the nanocomposites store energy. The results show that the adsorption calculation for PPy onto the graphene nanosheet has an exothermic adsorption energy of −1.68 eV and an adsorption height of 3.28 Å. The loading of Zn atoms onto the Gr/PPy nanocomposite yielded a maximum specific capacity of 510.12 mAh g−1, resulting into a weak adsorption energy of −0.078 eV. The nanocomposite exhibited an extremely low Zn diffusion barrier of 12 meV, enabling a fast Zn diffusion on its surface. These findings suggest that G/PPy nanocomposites hold promise as a material to enhance energy storage in Zn‐ion batteries. The study, through DFT calculations, offers valuable insights into the electronic and structural properties of G/PPy nanocomposites and their potentials for improved energy storage in Zn‐ion batteries. It thus, contributes significantly to the current understanding of energy storage materials and provides a foundation for further research on the development of more effective and efficient energy storage solutions.Highlights DFT investigations of G/PPy nanocomposites show potential for improved energy storage in Zn‐ions batteries. The electronic and structural properties of the nanocomposites offer valuable insight into their feasibility. The results show that G/PPy nanocomposites can enhance energy storage in Zn‐ion batteries. It contributes to the current understanding of energy storage nanocomposite materials. It provides a framework for developing effective and efficient energy storage technologies.

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Polyvinyl alcohol‐based fiber membranes with high strength and ultraviolet shielding properties for enhancing the shelf life of grapes

Gao,

Li,

Wang

et al. 2023

Vinyl Additive Technology

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Currently, the rising environmental concerns caused by nonbiodegradable food packaging materials have promoted the research and development of biodegradable alternatives. Polyvinyl alcohol (PVA) was selected as the substrate, and zinc oxide nanoparticles (ZnONPs) and titanium dioxide nanoparticles (TiO2NPs) were blended and modified with PVA, respectively. Based on the electrostatic spinning technology to prepare fiber membranes with high strength and UV blocking properties for grapes preservation. The study indicated that the tensile strength of PVA fiber membranes increased by 243% and 209% when ZnONPs and TiO2NPs were added at 1%, respectively. Under UV radiation, the PVA/ZnO composite membranes exhibited superior UV absorption than the PVA/TiO2 composite membranes. After conducting TG tests, it was found that the addition of ZnONPs decreased the thermal stability of the fiber membranes, while TiO2NPs could improve the thermal stability. Both composite membranes could extend grapes' shelf life, but the PVA/ZnO composite membranes were more effective at maintaining freshness than the PVA/TiO2 composite membranes.

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Structural, optical, electrical, and DFT studies of chitosan/polyvinyl alcohol composite doped with mixed nanoparticles (GO/TiO2) for flexible energy-storage devices

Cited by 10 publications

References 37 publications

M³⁺/NaTiO₃/PVA–chitosan nanocomposites (M = Ga, Ce, Nd or Er): novel solid polymer electrolytes for supercapacitors

M³⁺/NaTiO₃/PVA–chitosan nanocomposites (M = Ga, Ce, Nd or Er): novel solid polymer electrolytes for supercapacitors

Density functional theory investigation of the energy storage potential ofgraphene‐polypyrrolenanocomposites as high‐performance electrode for Zn‐ion batteries

Polyvinyl alcohol‐based fiber membranes with high strength and ultraviolet shielding properties for enhancing the shelf life of grapes

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Structural, optical, electrical, and DFT studies of chitosan/polyvinyl alcohol composite doped with mixed nanoparticles (GO/TiO2) for flexible energy-storage devices

Cited by 10 publications

References 37 publications

M3+/NaTiO3/PVA–chitosan nanocomposites (M = Ga, Ce, Nd or Er): novel solid polymer electrolytes for supercapacitors

M3+/NaTiO3/PVA–chitosan nanocomposites (M = Ga, Ce, Nd or Er): novel solid polymer electrolytes for supercapacitors

Density functional theory investigation of the energy storage potential ofgraphene‐polypyrrolenanocomposites as high‐performance electrode for Zn‐ion batteries

Polyvinyl alcohol‐based fiber membranes with high strength and ultraviolet shielding properties for enhancing the shelf life of grapes

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Product

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M³⁺/NaTiO₃/PVA–chitosan nanocomposites (M = Ga, Ce, Nd or Er): novel solid polymer electrolytes for supercapacitors

M³⁺/NaTiO₃/PVA–chitosan nanocomposites (M = Ga, Ce, Nd or Er): novel solid polymer electrolytes for supercapacitors