Investigation of energy band gap in polymer/ZnO nanocomposites

Shanshool, Haider Mohammed; Yahaya, Muhammad; Yunus, Wan Mahmood Mat; Abdullah, Ibtisam Yahya

doi:10.1007/s10854-016-5046-8

Cited by 96 publications

(39 citation statements)

References 23 publications

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“…This redshift in the absorption spectra has been observed previously for polymer composites embedded with ZnO nanoparticles. [ 1,7,8,13 ] This phenomenon is described by the ZnO nanoparticles’ quantum confinement effect: it also confirms the complexation of the ZnO nanoparticles with the PVA's functional group. [ 8,13 ] In addition, a weak absorbance peak (at 375 nm) is observed at a lower concentration, which is enhanced by increasing ZnO concentration in the polymer matrix.…”

Section: Resultsmentioning

confidence: 75%

“…The scientific community maintains considerable interest in polyvinyl alcohol (PVA) based on metal oxide nanocomposites due to its ability to combine both polymers and dopants with their properties. [ 1–15 ] These polymers have many applications in medical and engineering technology because of their mechanical, electrical, and optical properties. [ 16,17 ] ZnO‐based polymeric nanocomposite materials have attracted scientific attention because of their transparency, high electron mobility, wide bandgap (3.2 eV, at 300 K [ 18,19 ] ), and electrical properties.…”

Section: Introductionmentioning

confidence: 99%

“…The insertion of ZnO nanoparticles into PVA matrices, in general, may significantly change their electric, mechanical, and optical characteristics. [ 1,7,8,15 ] PVA is readily water‐soluble, and as such has many uses in the fields of polymer processing, pharmacy, and biomedicine. [ 20–23 ]…”

Section: Introductionmentioning

confidence: 99%

“…Shanshool et al [ 7 ] have studied the optical properties of various composites that use ZnO nanoparticles as a filler material in different polymer matrices, such as poly(methyl methacrylate) (PMMA), poly(vinylidene fluoride) (PVDF), PVA, and polystyrene (PS). ZnO nanoparticles have been found to have an effect on the bandgap of each polymer matrix, depending on the polymer's nature.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Linear Optical Parameters and Dielectric Properties of Polyvinyl Alcohol/ZnO Nanocomposite Films

Soliman

Rashad

Ali

et al. 2020

Physica Status Solidi (a)

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The scientific community maintains considerable interest in polyvinyl alcohol (PVA) based on metal oxide nanocomposites due to its ability to combine both polymers and dopants with their properties. [1-15] These polymers have many applications in medical and engineering technology because of their mechanical, electrical, and optical properties. [16,17] ZnO-based polymeric nanocomposite materials have attracted scientific attention because of their transparency, high electron mobility, wide bandgap (3.2 eV, at 300 K [18,19]), and electrical properties. The insertion of ZnO nanoparticles into PVA matrices, in general, may significantly change their electric, mechanical, and optical characteristics. [1,7,8,15] PVA is readily water-soluble, and as such has many uses in the fields of polymer processing, pharmacy, and biomedicine. [20-23] Shanshool et al. [7] have studied the optical properties of various composites that use ZnO nanoparticles as a filler material in different polymer matrices, such as poly(methyl methacrylate) (PMMA), poly(vinylidene fluoride) (PVDF), PVA, and polystyrene (PS). ZnO nanoparticles have been found to have an effect on the bandgap of each polymer matrix, depending on the polymer's nature. The structural, optical, and dielectric properties of ZnOreinforced poly(ethylene oxide) (PEO) blended with poly(vinyl pyrrolidone) (PVP) have been previously studied by Choudhary. [13] It was noted that the enhanced optical properties of obtained nanocomposite films confirm the suitability of these materials for use in optical sensors. Moreover, Selvi et al. [1] synthesized ZnO nanoparticles with the co-precipitation method and reinforced a PVA matrix to investigate the optical and electrical properties of the resultant polymer composite films. However, the linear optical parameters, such as the refractive

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Section: Resultsmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation of Linear Optical Parameters and Dielectric Properties of Polyvinyl Alcohol/ZnO Nanocomposite Films

Soliman

Rashad

Ali

et al. 2020

Physica Status Solidi (a)

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“…It is well known that the Imidazole. moiety possesses strong electron acceptor character, therefore PNVI /ZnO can be used to UV-filtering materials such as fibers and coatings [13]. The transmittance spectra of PNVI and its ZnO nanocomposite films with 2.0 wt% ZnO filler contents transmittance at two different wavelengths, that is at 356nm and 550 nm is shown in Fig.5b.…”

Section: Fig-5b Uv-transmittance Spectra Of the Pnvi And Pnvi-znomentioning

confidence: 99%

UV Protecting Behavior of Imidazole Based Zno Hybrid Thin Films for Sunscreen Applications

2019

IJRTE

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UV radiations near visible region effects the human, and it causes many skin diseases. UV light not only effects human and also decolorize most of the textile fabrics. It degrades anticorrosive coatings and it triggers the corrosion over the metal surface. The protection of UV radiations has lot of attraction in the field of engineering research field to prepare sunscreen coatings. This work explains the preparation and characterization of Poly (N-vinyl imidazole)/ZnO by different techniques. The UV protective behaviors of prepared polymer composite thin films, make them as promising candidates for UV shielding and sunscreen applications.

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Negatively Charged Nanosheets Significantly Enhance the Energy‐Storage Capability of Polymer‐Based Nanocomposites

et al. 2020

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Polymer‐based dielectric materials play a key role in advanced electronic devices and electric power systems. Although extensive research has been devoted to improve their energy‐storage performances, it is a great challenge to increase the breakdown strength of polymer nanocomposites in terms of achieving high energy density and good reliability under high voltages. Here, a general strategy is proposed to significantly improve their breakdown strength and energy storage by adding negatively charged Ca2Nb3O10 nanosheets. A dramatically enhanced breakdown strength (792 MV m−1) and the highest energy density (36.2 J cm−3) among all flexible polymer‐based dielectrics are observed in poly(vinylidene fluoride)‐based nanocomposite capacitors. The strategy generalizability is verified by the similar substantial enhancements of breakdown strength and energy density in polystyrene‐based nanocomposites. Phase‐field simulations demonstrate that the further enhanced breakdown strength is ascribed to the local electric field, produced by the negatively charged Ca2Nb3O10 nanosheets sandwiched with the positively charged polyethyleneimine, which suppresses the secondary impact‐ionized electrons and blocks the breakdown path in nanocomposites. The results demonstrate a new horizon of high‐energy‐density flexible capacitors.

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Investigation of energy band gap in polymer/ZnO nanocomposites

Cited by 96 publications

References 23 publications

Investigation of Linear Optical Parameters and Dielectric Properties of Polyvinyl Alcohol/ZnO Nanocomposite Films

Investigation of Linear Optical Parameters and Dielectric Properties of Polyvinyl Alcohol/ZnO Nanocomposite Films

UV Protecting Behavior of Imidazole Based Zno Hybrid Thin Films for Sunscreen Applications

Negatively Charged Nanosheets Significantly Enhance the Energy‐Storage Capability of Polymer‐Based Nanocomposites

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