Optical and morphological properties of poly(vinyl chloride)-nano-chitosan composites doped with TiO2 and Cr2O3 nanoparticles and their potential for solar energy applications

Abed, Rasheed N.; Sattar, Muhammed Abdul; Hameed, S. Sahul; Ahmed, Dina S.; Al-Baidhani, Mohammed; Kadhom, Mohammed; Jawad, Ali H.; Zainulabdeen, Khalid; Al‐Mashhadani, Mohammed H.; Rashad, Alaa A.; Yousif, Emad

doi:10.1007/s11696-022-02512-6

Cited by 14 publications

(4 citation statements)

References 44 publications

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“…Urbach energy values were calculated from the graph between the log of the absorption coefficient inside the y-axis and the energy values inside the x-axis as in Figure (4) pure polymer films (s1) (2.38ev) and samples (s2, s3, s4, s5) polyvinyl alcohol doped with silicon nano carbide in proportions (0.90%, 0.91%, 0.93%, 0.95%)wt respectively at room temperature and the values representing each(2.45ev,0. 2.74ev, 3.67ev) respectively as the literature indicates [22]. In Figure (4) Urbach energy increased in the second , fourth ,and fifth samples and increased in the third sample(2.94ev) slight increase, The high Urbach energy value suggests that the PVA-SiC nanoparticles have more structural disorder [23] due to increased concentrations of nanoparticles, and since the Urbach energy is a measure of the disturbance content, This suggests that following the inclusion of PVA-SiC nanocrystal, a disorder in the form of localized states inside the HOMO-LUMO gap of the PVA matrix has Where: 𝛼 the absorption coefficient and A the absorbance are the t thickness of the cheat.…”

Section: 𝜶𝒉𝝂 = 𝑩(𝒉 𝝂 − 𝑬𝒈)𝒓 …………………………(1)mentioning

confidence: 85%

Optical Properties of PVA Silicon Carbide Nano Composites Films Synthesized Via Laser Ablation

Mohsen,

Hasan

2023

JUBPAS

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Background: Enhancing the optical characteristics of nano-silicon carbide and polyvinyl alcohol films is thought to be crucial for obtaining the semiconductor with the lowest energy gap for applications in electrical devices, digital displays, and sensors. Materials and Methods: Poly vinyl alcohol and silicon carbide's optical properties were examined. A pulsed laser with a 532 nm wavelength is used to create these nanoparticles into widespread nanoparticles in two environments (water and vinyl alcohol). Polyvinyl alcohol nanocomposite was created by spin coating silicon carbide particles with the weight fractions 0.90%, 0.91%, 0.93%, and 0.95%. Fourier spectroscopy was used to locate the functional groups based. Techniques FESEM were used to analyze the surface composition and nanoparticle dispersion on the membrane-surface of the nanocomposite. using spectroscopy UV-Vis used to record the absorbance spectrum in the range of (200-800) nm for ultraviolet radiation. Results: The direct energy gap (5.585, 5.310, 5.480, 4.986, 4.800) eV and the indirect (5.006, 4.880, 4.916, 4.683, 4.490) eV and Urbach energy (2.38, 2.45, 2.94, 2.74, 3.67) eV were calculated.for the samples by ratio, as shown in Table No. 1. Conclusion: By investigating the optical characteristics of nanoparticles, such as their extinction and absorption coefficients, direct and indirect optical energy gaps, and Urbach energies .increase in extinction and absorption coefficients Urbach energy when adding nano carbide to polyvinyl alcohol, results show narrowing of the direct and indirect energy gaps. This suggests that the nanocomposite's optical characteristics have improved.

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Section: 𝜶𝒉𝝂 = 𝑩(𝒉 𝝂 − 𝑬𝒈)𝒓 …………………………(1)mentioning

confidence: 85%

Optical Properties of PVA Silicon Carbide Nano Composites Films Synthesized Via Laser Ablation

Mohsen,

Hasan

2023

JUBPAS

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“…This knowledge aids in optimizing the fabrication process and further tailoring the properties of the modified gelatin for specific applications. Future studies can explore the correlation between the observed surface topography and the performance of the modified gelatin in terms of its mechanical strength, drug release behavior and bioactivity [21][22][23][24][25].…”

Section: Atomic Force Microscopy (Afm)mentioning

confidence: 99%

Gelatin-Immobilized Cu(II) Metal Complex: Synthesis and Applications

Ahmed,

Ibraheem,

Al-Mashhadani

et al. 2024

Trends Sci

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Gelatin, resulting from collagen, a naturally occurring protein found in ligaments and tissues, is formed through the boiling of connective tissues, bones and animal skins, commonly sourced from cows. Its exceptional properties, including the ability to form strong, transparent gels and flexible films, easy digestibility, solubility in hot water and positive binding action, make gelatin a highly valuable resource in various industries such as food processing, pharmaceuticals, photography and paper production. It is regarded as non-toxic, biocompatible, biodegradable and generally safe for use. Gelatin serves as a key ingredient in the manufacturing of a wide range of products, with a notable example being hard gelatin capsules, which come in varying levels of solubility in water. In this study, a Schiff base was synthesized by modifying gelatin with salicylaldehyde in ethanol at room temperature, a mixture of gelatin-Schiff base added to appropriate copper chloride sonicated in ethanol, the mixture was poured onto glass plates and allowed to dry. Modified gelatin film was produced and characterized using FTIR spectroscopy, while its surface properties were examined through Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). Furthermore, the modified gelatin film’s potential biological activity was assessed against bacterial strains. The antibacterial screening tests revealed that the modified gelatin exhibited promising antibacterial activity against microorganisms, indicating an improvement in its antibacterial efficacy. These findings highlight the enhanced antibacterial potential of the modified gelatin film, further contributing to its versatility and potential applications in various fields. Different molecular weight distributions within the gelatin can lead to variations in film formation and subsequent surface features. Additionally, the composition of the gelatin film, including the presence of any crosslinking agents or modified functional groups, can further influence the resulting surface morphology. This study focuses on the preparation of modified gelatin films using suitable aldehyde compounds and explores their potential for pharmaceutical applications. Various techniques assessment of biological activity will be employed to investigate the properties and performance of the modified gelatin films. HIGHLIGHTS A Schiff base was synthesized by modifying gelatin with salicylaldehyde, a mixture of gelatin-Schiff base added to appropriate copper chloride to produce gelatin-Schiff base-Cu(II) complex Modified gelatin characterized using FTIR spectroscopy, while its surface properties were examined through SEM and AFM The modified gelatin film’s potential biological activity was assessed against bacterial strains GRAPHICAL ABSTRACT

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“…28 Titanium dioxide and chromium oxide nanoparticle-doped PVC-chitosan composites have been created, and they have the potential to be used in solar energy applications. 29 The PVC/tungsten (VI) oxide sample can be used as high-frequency transformer cores with very low dielectric loss using the data. 30 PVC/NiO nanocomposites have been proposed as a possible solution for nonlinear optical applications due to the trend of rising nonlinear parameters.…”

Section: Introductionmentioning

confidence: 99%

“…ZnO is commonly used as a UV light capture agent to enhance polymers' UV protection 28 . Titanium dioxide and chromium oxide nanoparticle‐doped PVC‐chitosan composites have been created, and they have the potential to be used in solar energy applications 29 . The PVC/tungsten (VI) oxide sample can be used as high‐frequency transformer cores with very low dielectric loss using the data 30 .…”

Section: Introductionmentioning

confidence: 99%

PVC polymer/ZnO/NiO/Co₃O₄ nanocomposites: Toward improved optical properties

El‐Naggar

Kamal

Abd‐Elkader

et al. 2023

Vinyl Additive Technology

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Undoped and doped polyvinyl chloride (PVC) with zinc, nickel and cobalt oxides, ZnO/[(1−x)NiO/xCo3O4], composites were fabricated using co‐precipitation and casting techniques. The different phases present in the nanofiller ZnO/[(1−x)NiO‐xCo3O4] mixed oxides were determined using synchrotron x‐ray diffraction technique. X‐ray diffraction, scanning electron microscopy (SEM) images and energy dispersive spectroscopy (EDS) analysis techniques were used to investigate the structure, composition, and morphology of pure and loaded PVC with nanofiller oxides. In general, compared with pure PVC, the absorbance was greatly enhanced, especially in the UV region, upon loading ZnO/[(1−x)NiO‐xCo3O4], but it changed irregularly with the cobalt oxide (Co3O4) content (x). The direct and indirect optical band gaps of pristine PVC (4.14, 4.12 eV) reduced irregularly to minimum values 3.97 and 3.23 eV respectively for the polymer doped with ZnO/[0.3NiO/0.7Co3O4]. The refractive index was enhanced in the visible and IR regions and attained its highest value for PVC doped with zinc oxide/nickel oxide (ZnO/NiO) only (x = 0.0). NiO and Co3O4 ratios affect the linear and nonlinear optical parameters. The emitted spectra from pure and doped PVC polymers with the composite oxides [ZnO/[(1−x)NiO‐xCo3O4] under different excitation wavelengths were also explored. The FL intensity enhanced for the excitation wavelengths (λexc) = 380 and 434 nm but quenched for λexc = 317 nm. The loaded polymers absorb UVA, UVB, and UVC rays and are good candidates for solar cell applications.

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Optical and morphological properties of poly(vinyl chloride)-nano-chitosan composites doped with TiO2 and Cr2O3 nanoparticles and their potential for solar energy applications

Cited by 14 publications

References 44 publications

Optical Properties of PVA Silicon Carbide Nano Composites Films Synthesized Via Laser Ablation

Optical Properties of PVA Silicon Carbide Nano Composites Films Synthesized Via Laser Ablation

Gelatin-Immobilized Cu(II) Metal Complex: Synthesis and Applications

PVC polymer/ZnO/NiO/Co₃O₄ nanocomposites: Toward improved optical properties

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Optical and morphological properties of poly(vinyl chloride)-nano-chitosan composites doped with TiO2 and Cr2O3 nanoparticles and their potential for solar energy applications

Cited by 14 publications

References 44 publications

Optical Properties of PVA Silicon Carbide Nano Composites Films Synthesized Via Laser Ablation

Optical Properties of PVA Silicon Carbide Nano Composites Films Synthesized Via Laser Ablation

Gelatin-Immobilized Cu(II) Metal Complex: Synthesis and Applications

PVC polymer/ZnO/NiO/Co3O4 nanocomposites: Toward improved optical properties

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Product

Resources

About

PVC polymer/ZnO/NiO/Co₃O₄ nanocomposites: Toward improved optical properties