Synthesis and augmented optical characteristics of PEO–PVA–SrTiO3–NiO hybrid nanocomposites for optoelectronics and antibacterial applications

Mahdi, Shaimaa Mazhar; Habeeb, Majeed Ali

doi:10.1007/s11082-022-04267-6

Cited by 40 publications

(9 citation statements)

References 37 publications

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“…Due to the reduced time available for the dipoles to align at high frequencies, the dielectric loss decreases [36][37][38]. The dielectric loss of PMMA/Si 3 N 4 /TaC nanocomposites as a function of Si 3 N 4 /TaC NPs are shown in Figure (7). From this figure, it is note that the dielectric loss rises with rising content of the Si 3 N 4 /TaC nanoparticle.…”

Section: Resultsmentioning

confidence: 94%

“…Due to their low conductivity, most polymers are insulators in general. The inclusion of the proper dopants as well as thermally and electrically produced carriers affect the conductivity [6,7]. Due to its excellent oxidation resistance and strong thermal conductivity, silicon nitride (Si3N4) is a possible alternative to silica supports that are more frequently utilized in reactions where efficient heat transmission is required.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Si3N4/TaC nanomaterials on the structural and electrical characteristics of poly methyl methacrylate for electrical and electronics applications

Mohammed,

Habeeb

2023

East Eur. J. Phys.

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In this study, the casting method was used to prepared PMMA/Si3N4/TaC nanocomposites with variant content (0,2,4,6,8) % wt of Si3N4/TaC nanoparticles. The structural and electrical properties have been investigated. Scanning electron microscope (SEM) indicate that the homogenous, smooth and dispersed of Si3N4 and TaC NPs inside the PMMA matrix due to strong covalent interaction between the Si3N4 and TaC NPs in the PMMA matrix which mean a good method for prepared films. Optical microscope images explained that when increasing in content of nanoparticles that forming network paths inside the polymeric matrix that act as charge carriers. FTIR spectra indicate to a physical interference between the polymer matrix and nanoparticles. The AC electrical properties of nanocomposites obtained that the dielectric constant and dielectric loss rise with rising content of nanoparticles and decrease with rising frequency of applied electric field. While the A.C electrical conductivity rise with rising the frequency and weight content of Si3N4/TaC nanoparticles. This results indicated that the PMMA/Si3N4/TaC nanostructures can be considered as promising materials for electronics and electrical nanodevices.

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Section: Resultsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Effect of Si3N4/TaC nanomaterials on the structural and electrical characteristics of poly methyl methacrylate for electrical and electronics applications

Mohammed,

Habeeb

2023

East Eur. J. Phys.

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“…Figure (5) demonstrates the relationship between (αℎ𝑣) 1/2 and photon energy. This figure indicates energy gap decreased by an increase in (CoO-ZrO 2 ) concentration for (PVA-CoO-ZrO 2 ) nanocomposites, this is because the material has risen in disruption, which means that the secondary excitation within the band can be made possible and the width of these levels increases with increasing concentrations of CoO-ZrO 2 ) NPs, that minimize the energy gap [28,29]. Figure 6 illustrates the relationship between (αhv) 1/3 (cm -1 •eV) 1/3 and photon energy of (PVA-CoO-ZrO 2 ) nanocomposite.…”

Section: Resultsmentioning

confidence: 98%

Synthesis and Characterization of (PVA-CoO-ZrO2) Nanostructures for Nanooptoelectronic Fields

Jaber,

Habeeb,

Radi

2023

East Eur. J. Phys.

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Nanocomposites have a wide range of applications, including optical integrated circuits, sensors, coatings, and medical devices. As a result, the purpose of this paper is to prepare a new type of nanocomposites made of polyvinyl alcohol (PVA) with different concentrations (0, 1, 2 and 3) wt% of cobalt oxide and zirconium dioxide (CoO-ZrO2) nanoparticles by using casting method. Microscopic photographs demonstrate the fact that the additive distribution amount of NPs in the polymer was uniform, and (CoO-ZrO2) NPs formed a continuous network within the polymer when the concentration reached 3wt.%. The outcomes of optical properties indicate that the absorbance of nanocomposites improves as the concentrations of cobalt oxide and zirconium dioxide nanoparticles increase while transmittance and the optical energy gap decrease. On the other hand, optical constants of nanocomposites (refractive index, absorption coefficient, extinction coefficient, real and imaginary the dielectric constants) and optical conductivity are increase with increases in the weight percentages of (CoO-ZrO2) nanoparticles. These outcomes demonstrate the (PVA-CoO -ZrO2) NCs use for various optical devices.

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“…In time, at room temperature, the maghemite turns into hematite crystalline structure. Maghemite has the same crystalline structure like Fe 3 O 4 (magnetite) [13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Improved Optical Characteristics of Biopolymer Blend Doped with Iron-Oxide Nanoparticles for Optics and Biomedical Applications

2023

Nanosistemi, Nanomateriali, Nanotehnologii

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еВ та з 2,79 еВ до 2,18 еВ для дозволеного та забороненого непрямих переходів відповідно, коли додавання наночастинок оксиду Феруму досягає 6 мас.%. Ця особливість може відігравати життєво важливу роль у створенні нанокомпозитів ПОЕ/ПВС/Fe 2 O 3 для майбутніх застосувань в оптоелектроніці. Показник заломлення, коефіцієнт екстинкції, діелектрична проникність і оптична провідність збільшуються зі збільшенням концентрації наночастинок оксиду Феруму. Досліджено антибактеріальні властивості нанокомпозитів ПОЕ/ПВС/Fe 2 O 3 щодо бактерій E. coli. Експериментальні результати показують, що діяметер зони інгібування збільшується зі збільшенням концентрації наночастинок оксиду Феруму. Нарешті, нанокомпозити ПОЕ/ПВС/Fe 2 O 3 мають гарну антибактеріяльну активність.

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Synthesis and augmented optical characteristics of PEO–PVA–SrTiO3–NiO hybrid nanocomposites for optoelectronics and antibacterial applications

Cited by 40 publications

References 37 publications

Effect of Si3N4/TaC nanomaterials on the structural and electrical characteristics of poly methyl methacrylate for electrical and electronics applications

Effect of Si3N4/TaC nanomaterials on the structural and electrical characteristics of poly methyl methacrylate for electrical and electronics applications

Synthesis and Characterization of (PVA-CoO-ZrO2) Nanostructures for Nanooptoelectronic Fields

Synthesis and Improved Optical Characteristics of Biopolymer Blend Doped with Iron-Oxide Nanoparticles for Optics and Biomedical Applications

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