Boosting the optical, structural, electrical, and dielectric properties of polystyrene using a hybrid GNP/Cu nanofiller: novel nanocomposites for energy storage applications

Al‐Muntaser, A.A.; Pashameah, Rami Adel; Saeed, Abdu; Al-Wafi, Reem; Alzahrani, Eman; AlSubhi, Samah A.; Yassin, A. Y.

doi:10.1007/s10854-023-10104-7

Cited by 46 publications

(10 citation statements)

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“…The same phenomenon was recently noted in spectrum analyses of PVA and carboxymethyl cellulose (CMC) blend films filled with graphene nanoplatelets/TiO 2 hybrid nanofillers [51] and polystyrene films filled with MnTPPCl [52]. The direct optical energy gaps for this work were compared with the published results [2,[52][53][54] and listed in table 3; the obtained optical energy gap by this study is better than those polymers, i.e., PVDF/PVK, PVP, PEO, CMC, PS that filled with the different fillers including Li 4 Ti 5 O 12 , copper NPs and graphene nanoplatelet, meso-tetraphenyl porphine manganese (III) chloride, molybdenum trioxide NPs, silver NPs and multiwalled carbon nanotubes (MWCNTs).…”

Section: Uv/visible Measurementssupporting

confidence: 73%

“…Nanoparticles (NPs) have gained much interest recently because of their extraordinary qualities and potential in materials research [1][2][3][4][5][6]. Metal-oxide NPs like titanium dioxide nanoparticles (TiO 2 NPs) are among the most used nanomaterials in industry.…”

Section: Introductionmentioning

confidence: 99%

“…Although the PS and PVK have been blended with different polymers and incorporated with different NPs [2,18,21,29,30], to the best of our knowledge, no study has investigated the structural, optical, electrical, and dielectric characteristics of the PS/PVK blend incorporated with TiO 2 as a nanofiller. The present research used the solution casting method to create flexible and lightweight polymer nanocomposites consisting of a PS/PVK blend filled with TiO 2 NPs with improved optical and electrical properties for optoelectronics devices.…”

Section: Introductionmentioning

confidence: 99%

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An insight into the role of titanium oxide nanofiller on the structural, optical, electrical, and dielectric characteristics of PS/PVK composite

et al. 2023

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Nanocomposite films made of polystyrene (PS) and polyvinyl carbazole (PVK) and filled with varying quantities of titanium oxide (TiO2) nanoparticles (NPs) were prepared using the solution casting process. The TiO2 NPs' impact on the pure PS/PVK blend's structural, optical, and conductive properties was investigated and explained. X-ray diffraction (XRD) and Transmission electron microscopy (TEM) measurements indicate that the synthesized TiO2 NPs' size ranges between 12 and 32 nm and has a tetragonal anatase phase. The XRD scans also indicate that the PS/PVK filling with TiO2 NPs decreases the nanocomposite crystallinity. Fourier transform infrared (FTIR) analysis shows the main distinctive absorption peaks of PS and PVK, whose intensities changed randomly after filling. Moreover, the highest TiO2 NPs content showed a new peak at 449 cm-1. The UV/visible measurements showed that the optical energy gaps for the direct and indirect permitted transitions decreased as the TiO2 NPs content increased. Using impedance spectroscopy at room temperature, the AC electrical conductivity of the PS/PVK mixture containing TiO2 NPs was investigated over a broad frequency range from 10-1 to 107 Hz. It has been shown that the frequency dependence of AC electrical conductivity obeys Jonscher's rule, and the increase of TiO2 NPs concentration in the blend induces the formation of a percolating network within the composite. It has also been shown that the composite's dielectric loss and constant increase with nanoparticle concentration.

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Section: Uv/visible Measurementssupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An insight into the role of titanium oxide nanofiller on the structural, optical, electrical, and dielectric characteristics of PS/PVK composite

et al. 2023

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“…The degree of crystallinity of ZnAl LDH and ZnAl LDH‐graphene based PVA nanocomposite were found to be 34.8 and 48.6. It was clearly evident that crystallinity of the nanocomposite was significantly improved by reinforcement of the LDH and graphene in the PVA matrix 37 . The XRD peaks of ZnAl LDH nanocomposite at 2 theta of 19.76° and 22.84° are detected which corresponds to the (101) and (200) planes, respectively.…”

Section: Resultsmentioning

confidence: 95%

“…It was clearly evident that crystallinity of the nanocomposite was significantly improved by reinforcement of the LDH and graphene in the PVA matrix. 37 The XRD peaks of ZnAl LDH nanocomposite at 2 theta of 19.76 and 22.84 are detected which corresponds to the (101) and (200) planes, respectively. Moreover, the ZnAl LDH-PVA nanocomposites exhibits the major XRD peaks at 11.47 and 23.31 which are slightly shifted to lower angles, which confirmed the presence of dispersed ZnAl LDH nanoparticles in the PVA matrix.…”

Section: Structural Analysis Of Znal Ldh and Nanocomposite Samplesmentioning

confidence: 98%

Remarkable tailoring of thermal and dielectric properties of poly(vinyl alcohol) nanocomposite via hydrothermal grown ZnAl layer di hydroxide nanostructures and graphene fillers

Ritu,

Patel,

Gupta

2023

Vinyl Additive Technology

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In this work, we have synthesized the zinc‐aluminum layered double hydroxide (ZnAl LDH) nanostructures using cost‐effective hydrothermal technique. The ZnAl LDH and graphene‐based poly(vinyl alcohol) (PVA) nanocomposites are fabricated. The crystal structure, morphology, thermal, and dielectric properties of pristine PVA and ZnAl LDH and graphene‐based PVA nanocomposites films were investigated using X‐ray diffraction, HR‐transmission electron microscopy, thermo gravimetric analysis, and impedance analyzer. HRTEM analysis reveals the hexagonal nanoplates shape‐like morphology of Zn‐Al layered double hydroxides with an average thickness of 40–50 nm and size of 400–600 nm. High thermal stability was observed from ZnAl LDH and graphene‐reinforced nanocomposite. Enhanced thermal stability of 250°C and low weight loss was observed from ZnAl LDH reinforced PVA‐based nanocomposites compared to pristine PVA. Zn‐Al LDH nanoplates‐graphene‐PVA based nanocomposites showed ultra‐high dielectric constant (ɛ′) of 794 as compared to the ZnAl LDH‐PVA nanocomposites (ɛ′ ~ 334) and pristine PVA sample (ɛ′ ~ 35). Low dielectric loss of 0.27, 0.18, 0.38 was observed for pristine PVA, ZnAl‐LDH‐PVA and ZnAl‐LDH‐graphene‐PVA nanocomposites. The large enhancement of the dielectric constant and thermal stability were discussed in terms of improved crystallinity, interfacial polarization and formation of nanodipoles in the matrix. This study reveals a significant role of LDH‐graphene‐based hybrid nanocomposites in optoelectronics, energy storage, sensors, energy conversion and thermally stable devices.Highlights Growth of highly crystalline zinc‐aluminum layered double hydroxide nanostructures. Improved thermal stability for Zn‐Al LDH‐graphene‐PVA nanocomposites. High thermal stability from ZnAl LDH‐based PVA nanocomposites. Ultra‐high dielectric constant of 794 is observed from Zn‐Al LDH nanoplates‐graphene‐nanocomposites.

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Synthesis and characterization of Cu_xCd_1‐xS nanocrystals into functionalized nitrile butadiene rubber matrix

Balayeva,

Azizov,

Muradov

et al. 2024

J Chinese Chemical Soc

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IntroductionPolymetallic sulfides and heterostructures like CdIn2S4, CdZnS2, CuxS‐NiySz, Cu2CoSnS4, CoNi2S4, Zn0.76Co0.24S have been fabricated with various shapes and forms for new applications. Ternary copper cadmium sulfides (CuCdS2) are a p‐type semiconductor with a direct band gap of about 2.4 eV forms very good nanocrystals like copper sulfide could be potentially applied to optical and electronic applications. Knowing that the SILAR synthesis, optical, paramagnetic, dielectric properties, and annealing of copper cadmium sulfides have not been sufficiently investigated, they are extensively analyzed and studied in the present work.ObjectivesCuxCd1−xS (x = 0, 0.5, and 1) nanoparticles have been synthesized on the base of functionalized nitrile butadiene rubber by SILAR method and characterized using scanning electron microscopy, x‐ray diffractometer, UV–visible spectroscopy, Fourier‐transform infrared spectroscopy, electron paramagnetic resonance spectroscopy, and Raman spectroscopy. Effects of cycles, reaction time, and precursor concentration on the particle size, crystal growth and structure, bandgap energy, dielectric and paramagnetic properties, elemental composition, and morphology were investigated.MethodsThe synthesis of CuxCd1−xS nanocrystals was carried out into the obtained functional polymer matrix by SİLAR method. The functional polymer (FNBR) is a dark brown powder which contains ‐PO(OH)2 and ‐OPO(OH)2 functional groups and does not dissolve in organic and inorganic solvents, can be used as a very good stabilizer of nanostructures. The synthesis of CuxCd1−xS/FNBR nanocompsite was carried out in 3, 5, and 15 cycles.Results and discussionIn the process of ternary sulfide formation, the nucleation rate of CdS was high at the beginning of the reaction, while the growth rate and stability of CuS were high in the later course of the reaction. The average crystallite size of the nancrystallites has been increased from 1.13 nm to 7.39 nm by the increasing of the number of cycles from 5 to 15, respectively. It is explained by the inclusion of copper in the composition and getting more stable material. Copper cadmium sulfide nanostructures demonstrate wide band gap energy (~3.7 eV) in this work which is explained by the formation of nanosized particles in a limited volume of FNBR matrix.ConclusionsThe synthesis of CuxCd1‐xS nanocrystals was carried out into the obtained functional polymer matrix by SİLAR method. Strong diffraction peaks corresponding to cubic CdS are found with low SILAR cycles. SEM images of CuxCd1−xS/FNBR nanocomposite show that the atomic percentage of Cu and Cd into the ternary sulfide is 20.19% and 0.61%, respectively. It is explained by the inclusion of copper in the composition and getting more stable material with low solubility products (Ksp) which is in good agreement with XRD results. The calculated band gaps are higher than that of bulk CdS, CuS, and CuCdS2. Larger band gap is usually reported for defects or structural disorders, which is in good agreement with XRD and Raman results.

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Boosting the optical, structural, electrical, and dielectric properties of polystyrene using a hybrid GNP/Cu nanofiller: novel nanocomposites for energy storage applications

Cited by 46 publications

References 61 publications

An insight into the role of titanium oxide nanofiller on the structural, optical, electrical, and dielectric characteristics of PS/PVK composite

An insight into the role of titanium oxide nanofiller on the structural, optical, electrical, and dielectric characteristics of PS/PVK composite

Remarkable tailoring of thermal and dielectric properties of poly(vinyl alcohol) nanocomposite via hydrothermal grown ZnAl layer di hydroxide nanostructures and graphene fillers

Synthesis and characterization of Cu_xCd_1‐xS nanocrystals into functionalized nitrile butadiene rubber matrix

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Boosting the optical, structural, electrical, and dielectric properties of polystyrene using a hybrid GNP/Cu nanofiller: novel nanocomposites for energy storage applications

Cited by 46 publications

References 61 publications

An insight into the role of titanium oxide nanofiller on the structural, optical, electrical, and dielectric characteristics of PS/PVK composite

An insight into the role of titanium oxide nanofiller on the structural, optical, electrical, and dielectric characteristics of PS/PVK composite

Remarkable tailoring of thermal and dielectric properties of poly(vinyl alcohol) nanocomposite via hydrothermal grown ZnAl layer di hydroxide nanostructures and graphene fillers

Synthesis and characterization of CuxCd1‐xS nanocrystals into functionalized nitrile butadiene rubber matrix

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Synthesis and characterization of Cu_xCd_1‐xS nanocrystals into functionalized nitrile butadiene rubber matrix