Antimicrobial Activity of 6.5 MeV Electron-Irradiated ZnO Nanoparticles Synthesized by Microwave-Assisted Method

Sapnar, K. B.; Ghule, L. A.; Bankar, Ashok; Zinjarde, Smita; Bhoraskar, V.N.; Garadkar, K. M.; Dhole, S.D.

doi:10.1080/19430892.2012.738162

Cited by 6 publications

(2 citation statements)

References 12 publications

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“… Guanidinium carbonate ((CH 5 N 3 ) 2 ·H 2 CO 3 ) for obtaining spherical nanoparticles [ 644 ] and flower-like ZnO [ 644 ]. Polyvinyl alcohol 2000 (PVA2000, (C 2 H 4 O) n ) for obtaining spherical nanoparticles [ 578 ]. Polyvinyl Pyrrolidine (PVP, (C 6 H 9 NO) n ) for obtaining star-like nanostructures [ 526 , 558 ].…”

Section: Microwave Hydrothermal Synthesis Of Znomentioning

confidence: 99%

A Review of Microwave Synthesis of Zinc Oxide Nanomaterials: Reactants, Process Parameters and Morphologies

2020

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Zinc oxide (ZnO) is a multifunctional material due to its exceptional physicochemical properties and broad usefulness. The special properties resulting from the reduction of the material size from the macro scale to the nano scale has made the application of ZnO nanomaterials (ZnO NMs) more popular in numerous consumer products. In recent years, particular attention has been drawn to the development of various methods of ZnO NMs synthesis, which above all meet the requirements of the green chemistry approach. The application of the microwave heating technology when obtaining ZnO NMs enables the development of new methods of syntheses, which are characterised by, among others, the possibility to control the properties, repeatability, reproducibility, short synthesis duration, low price, purity, and fulfilment of the eco-friendly approach criterion. The dynamic development of materials engineering is the reason why it is necessary to obtain ZnO NMs with strictly defined properties. The present review aims to discuss the state of the art regarding the microwave synthesis of undoped and doped ZnO NMs. The first part of the review presents the properties of ZnO and new applications of ZnO NMs. Subsequently, the properties of microwave heating are discussed and compared with conventional heating and areas of application are presented. The final part of the paper presents reactants, parameters of processes, and the morphology of products, with a division of the microwave synthesis of ZnO NMs into three primary groups, namely hydrothermal, solvothermal, and hybrid methods.

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Section: Microwave Hydrothermal Synthesis Of Znomentioning

confidence: 99%

A Review of Microwave Synthesis of Zinc Oxide Nanomaterials: Reactants, Process Parameters and Morphologies

2020

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“…30 Ensembles of ZnO nanocrystals were exposed to 6 MeV electrons at different fluences in the range of (1−2.5) × 10 15 electrons/cm 2 . 31 Characterization with X-ray diffraction has revealed that the initial size of the nanocrystals is ∼46 nm and it gradually decreases with increasing electron fluence achieving a minimum value of 15 nm for the highest fluence. The grain size decrease has been confirmed by the observed quantum size increase of the nanocrystallite band gap from 3.29 to 3.42 eV.…”

Section: Displacement Effects In Nanomaterialsmentioning

confidence: 99%

Electron and Neutron Beam Irradiation Effects in Homogeneous and Nanostructured Oxides

Nesheva

2023

ACS Omega

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Oxide-based materials have a variety of applications in chemical sensing and photocatalysis, thin-film transistors, complex-oxide field-effect transistors, nonvolatile memories, resistive switching, energy conversion, topological oxide electronics, and many others. The radiation resistance of these materials in such devices plays an important role in device operation in radiation environment, and this attracts much attention in the research area. In spite of damage in a number of cases high-energy particles may have a beneficial effect on the target. In this mini-review article examples of both creation of defects and beneficial changes in the structure and properties of homogeneous and nanostructured oxides caused by high-energy electron and neutron irradiation are given by considering some recently published results. First, the attention is turned to ionizing and displacement effects of electron and neutron irradiation in homogeneous bulk and thin-film oxides reported in the literature. Then, the effect of electron and neutron irradiation on nanostructured oxides and semiconductor nanoparticles embedded in an oxide matrix is regarded. Considerable attention is paid to silicon oxide layers since they are widely used in microelectronic products, which are among the most manufactured devices in human history. Processes of irradiation-induced lattice rearrangement, compositional changes, growth of nanoparticles and their size reduction, creation of point defects and their complexes, electron−hole generation, and charge trapping are discussed.

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Stuctural, optical and radiation shielding properties of zinc boro-tellurite alumina glasses

et al. 2018

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In this work, boro-telluride glasses with additional zinc, aluminum, and alkali-alkaline modifiers have been synthesized using the melt-quenching-annealing method. Six glasses were fabricated with composition of [(60 − x)B₂O₃-(10 + x)TeO₂-10ZnO-10Al₂O₃ 5Li₂O-5MgO] all in mol% and x varied from 0, 10, 20, 30, 40 and 50. The aim of this work is to understand the effect of changing the main glass former from B₂O₃ → TeO₂, to obtain new optical materials. To confirm the amorphous nature of these six glasses, X-ray diffraction was characterized for all six glasses from 10° to 80°. Optical absorption with wavelength range 200-800 nm in room temperature was measured, and the optical absorption coefficient α(λ) calculated to obtain the cutoff wavelength. In addition, gamma photons shielding features of the prepared K1-K6 glasses were evaluated by means of some essential parameters such as mass attenuation coefficients (μ/ρ) and effective atomic number (Zeff) at five energies between 0.356 and 1.33 MeV. No significant difference between the theoretical and simulation μ/ρ values was found. The effective atomic number results indiacte that as the TeO₂ content increases, the photons' attenuation increases. The number of interactions of gamma photons with K6 sample (which contains the maximum amount of TeO₂) is relatively high (in comparison to the rest of the samples), which results in more attenuation and thus better shielding features for K6.

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Antimicrobial Activity of 6.5 MeV Electron-Irradiated ZnO Nanoparticles Synthesized by Microwave-Assisted Method

Cited by 6 publications

References 12 publications

A Review of Microwave Synthesis of Zinc Oxide Nanomaterials: Reactants, Process Parameters and Morphologies

A Review of Microwave Synthesis of Zinc Oxide Nanomaterials: Reactants, Process Parameters and Morphologies

Electron and Neutron Beam Irradiation Effects in Homogeneous and Nanostructured Oxides

Stuctural, optical and radiation shielding properties of zinc boro-tellurite alumina glasses

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