Effect of stirring time on ZnO nanoparticles properties and morphology

Moghazy, Marwa A.

doi:10.1088/1757-899x/1046/1/012012

Cited by 9 publications

(3 citation statements)

References 42 publications

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“…The peaks at 620.2, 1370.0 cm −1 and around 840.0 cm −1 corresponds ZnO stretching bonds. These frequencies for metal oxides match with the earlier reported in literature [27]. The FTIR of synthesised ZnO powder and the one coated on ZK60alloy shows that both spectra are almost similar except for a minor peak change showing that the interatomic bonding remains intact during the coating process.…”

Section: Characterisation Of Zno Powder and Zno Deposited Mg Alloy Su...supporting

confidence: 89%

Corrosion behaviour of facile coated ZnO on Mg–Zn–Zr alloy in Ringer’s physiological solution

Tayyaba

Butt

Rehman

et al. 2023

Surface Engineering

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Magnesium alloys have received increasing consideration as biodegradable implants owing to their high specific strength, excellent biocompatibility and non-toxicity but their biomedical applications are limited due to low corrosion resistance which can be improved by surface modification and alloying with suitable elements. Various surface modifications of Mg alloys by deposition of different coatings are used to prevent untimely dissolution. This study presents the corrosion behaviour of a thin ZnO coating deposited on a Mg-Zn-Zr alloy by electrophoretic deposition in the Ringer's solution at 37°C. It was found that the ZnO coating is compact, homogeneous and significantly enhanced its corrosion resistance according to electrochemical test. The polarisation test showed a two orders of magnitude lower current density than that of the bare alloy, while EIS study found a two orders of magnitude greater ZnO coating impedance increasing in bioactivity. The bare specimens showed the development of cracks on the surface whereas the ZnO coated alloy showed no signs of pitting.

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Section: Characterisation Of Zno Powder and Zno Deposited Mg Alloy Su...supporting

confidence: 89%

Corrosion behaviour of facile coated ZnO on Mg–Zn–Zr alloy in Ringer’s physiological solution

Tayyaba

Butt

Rehman

et al. 2023

Surface Engineering

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“…This finding is consistent with several previous studies that also demonstrated agglomeration of spherical-shaped ZnO nanoparticles on SEM micrographs [ 27 , 28 ]. The morphology of ZnO nanoparticles could be altered with numerous factors, including temperature change [ 29 ] and stirring time during synthesis [ 30 ]. In the present study, ZnO was commercially acquired; hence, the reason for observing spherical-shaped agglomerated nanoparticles cannot be understood.…”

Section: Discussionmentioning

confidence: 99%

Adhesive Bond Integrity of Experimental Zinc Oxide Nanoparticles Incorporated Dentin Adhesive: An SEM, EDX, μTBS, and Rheometric Analysis

et al. 2022

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Objective. Our study is aimed at preparing an experimental adhesive (EA) and assessing the influence of adding 5-10 wt.% concentrations of zinc oxide (ZnO) nanoparticles on the adhesive’s mechanical properties. Methods. Field emission scanning electron microscopy (FESEM) and energy dispersive X-ray (EDX) spectroscopy were employed to investigate the morphology and elemental distribution of the filler nanoparticles. To examine the adhesive properties, microtensile bond strength (μTBS) testing, an investigation of the rheological properties, degree of conversion (DC), and analysis of the interface between the adhesive and dentin were carried out. Results. The SEM micrographs of ZnO nanoparticles demonstrated spherical agglomerates. The EDX plotting confirmed the incidence of Zn and oxygen (O) in the ZnO nanoparticles. The highest μTBS was observed for nonthermocycled (NTC) 5 wt.% ZnO group ( 32.11 ± 3.60 MPa), followed by the NTC-10 wt.% ZnO group ( 30.04 ± 3.24 MPa). Most of the failures observed were adhesive in nature. A gradual reduction in the viscosity was observed at higher angular frequencies, and the addition of 5 and 10 wt.% ZnO to the composition of the EA lowered its viscosity. The 5 wt.% ZnO group demonstrated suitable dentin interaction by showing the formation of resin tags, while for the 10 wt.% ZnO group, compromised resin tag formation was detected. DC was significantly higher in the 0% ZnO (EA) group. Conclusion. The reinforcement of the EA with 5 and 10 wt.% concentrations of ZnO nanoparticles produced an improvement in the adhesive’s μTBS. However, a reduced viscosity was observed for both nanoparticle-reinforced adhesives, and a negotiated dentin interaction was seen for 10 wt.% ZnO adhesive group. Further research exploring the influence of more filler concentrations on diverse adhesive properties is recommended.

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“…Of these, its antibacterial properties, [28] nontoxic material that is safe for humans and animals, [29] high chemical and mechanical stability, [30] high catalyses activity, [31] it has a wide range of radiation absorption, [32] electrochemical coupling coefficient, [32c,33] heat stability, high selectivity and durability. [34] It has been widely used in different fields, including the food, pharmaceutical and cosmetic industry, coating and paints, textile, rubber, electronics and electrotechnology industries. [32c,35] Because the adsorbent must be eco-friendly, non-toxic, abundant and inexpensive, the red clay and ZnO nanoparticles were selected for this study given their advantages.…”

Section: Introductionmentioning

confidence: 99%

High‐Efficiency Adsorptive Removal of Phenol from Aqueous Solution Using Natural Red Clay and ZnO Nanoparticles

Moghazy

2022

ChemistrySelect

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Phenol, a highly toxic compound, is a common hazardous chemical. Hence, eco‐friendly and cost‐effective technology for phenol elimination is required. The present study presents a comprehensive study to eliminate phenol compounds via an adsorption technique using ZnO nanoparticles and natural red clay as adsorbents. X‐ray diffraction (XRD), X‐ray fluorescence (XRF), Fourier transform infrared (FTIR), scanning electron microscope (SEM), and Burnauer‐Emmett‐Teller (BET) analyses were conducted for adsorbent surfaces characterization. The impacts of various effects, such as pH and the adsorbent dose on the phenol removal efficiency are described. The results reveal that both ZnO and clay adsorbents removed 99.4 % of phenol at the optimum adsorbent dose of 0.6 g\L and 1 g\L with pH 8 and 2, respectively. The isotherm adsorption data for phenol fitted into Langmuir for the two adsorbents. Yet, the ZnO nanoparticle surface showed a higher capacity (342.72 mg\g) than the natural clay surface (84.01 mg\g). ZnO nanoparticles removed phenol from polluted water at a smaller dose (0.6 g\L) than natural clay (1 g\L). In conclusion, the two adsorbents showed high efficiency in the phenol compound removal.

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Effect of stirring time on ZnO nanoparticles properties and morphology

Cited by 9 publications

References 42 publications

Corrosion behaviour of facile coated ZnO on Mg–Zn–Zr alloy in Ringer’s physiological solution

Corrosion behaviour of facile coated ZnO on Mg–Zn–Zr alloy in Ringer’s physiological solution

Adhesive Bond Integrity of Experimental Zinc Oxide Nanoparticles Incorporated Dentin Adhesive: An SEM, EDX, μTBS, and Rheometric Analysis

High‐Efficiency Adsorptive Removal of Phenol from Aqueous Solution Using Natural Red Clay and ZnO Nanoparticles

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