Structural, morphological and optical properties of Cr doped ZnS nanoparticles prepared without any capping agent

Al-Osta, Ahmed; Alnehia, Adnan; Qaid, A.A.; Al-Ahsab, Hassan T.; Al-Sharabi, Annas

doi:10.1016/j.ijleo.2020.164831

Cited by 29 publications

(19 citation statements)

References 22 publications

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“…According to the literature [28,29], the broad peak is an indication of small and fine NPs (nanoscale crystalline particles) while the narrow or low intensity peak signifies low crystallinity of the NPs. As shown in Figure 3(b) and Table 1, the average particle diameter (D) of the biosynthesized ZnO-NPs, which calculated using the Debye-Scherrer equation (Equation (2), were between 18.53 and 30.38 nm [30][31][32]. e dislocation density (δ) of the fabricated samples is specified using the Williamson and Smallman's relation (Equation ( 3)) [33,34].…”

Section: Xrd Analysismentioning

confidence: 99%

Pomegranate Peel Extract-Mediated Green Synthesis of ZnO-NPs: Extract Concentration-Dependent Structure, Optical, and Antibacterial Activity

Alnehia

Al-Odayni

Al-Sharabi

et al. 2022

Journal of Chemistry

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Plant-based nanoparticles (NPs) have many advantages over physical and chemical methods and featured with several medicinal and biological applications. In this study, zinc oxide NPs (ZnO-NPs) were synthesized using pomegranate peel aqueous extract, under mild and ecofriendly conditions. The ZnO-NPs structure, morphology, and optical properties were investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared (FTIR), and ultraviolet-visible (UV-Vis). Antibacterial activity against Gram-positive and Gram-negative strains were evaluated using the disk diffusion method. The effect of extract concentration (20, 30, and 40 mL) on the final properties of NPs, as well as the NPs concentration used for antibacterial test (50, 100, and 200 mg/mL), were also studied. The results indicate a hexagonal structure with particle size increases as extract concentration increase (D = 18.53, 29.88, and 30.34 nm), while the optical bandgap was decreased (Eg = 2.87, 2.80, and 1.92 eV). The antibacterial activity of ZnO-NPs indicated high efficiency, similar or even higher than that of the control azithromycin, more against S. aureus, increased with NPs concentration, and preferred when NPs prepared from high extract concentration. Such promising physicochemical properties support the usefulness and efficacy of the reported bio-route for production of ZnO-NPs and may encourage its application for large-scale production.

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Section: Xrd Analysismentioning

confidence: 99%

Pomegranate Peel Extract-Mediated Green Synthesis of ZnO-NPs: Extract Concentration-Dependent Structure, Optical, and Antibacterial Activity

Alnehia

Al-Odayni

Al-Sharabi

et al. 2022

Journal of Chemistry

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“…To inspect the purity and crystal nature of the biogenic ZnS particles, XRD analysis was performed, and the data obtained were depicted in Figure 3, compared with the standard spectra (JCPDS card no: 05-0566), and tabulated for the corresponding structural and geometry parameters in Tables 1 and 2. The results indicate cubic crystalline structure and, according to Scherrer's formula [34,40] computed in MDI Jade6 software, the average crystallite size (D ave ) was 2.33 nm. Additionally, the lattice parameters a, b, and c (5.357 Å), the unit cell volume (153.732 Å 3 ), space group (F43m), and density (3.9 g/cm 3 ) of synthesized sample were calculated following formula described elsewhere [40,41].…”

Section: Xrd Analysismentioning

confidence: 90%

“…The results indicate cubic crystalline structure and, according to Scherrer's formula [34,40] computed in MDI Jade6 software, the average crystallite size (D ave ) was 2.33 nm. Additionally, the lattice parameters a, b, and c (5.357 Å), the unit cell volume (153.732 Å 3 ), space group (F43m), and density (3.9 g/cm 3 ) of synthesized sample were calculated following formula described elsewhere [40,41]. These results are comparable to some other synthesized ZnS NPs [2,9,42,43].…”

Section: Xrd Analysismentioning

confidence: 90%

“…ZnS NPs commonly show distinct features different from its bulk counterpart as a result of high surface-to-volume ratio [7]. It can be synthesized by various methods such as physical, chemical, and biological approaches [8][9][10]. While physical routes such as thermal evaporation [11], pulsed laser vaporization [12], and molecular beam epitaxy [13] and chemical methods like coprecipitation [14], sol-gel [9], sonochemical [15], and hydrothermal [10] are widely employed, biosynthesis is still in its advent.…”

Section: Introductionmentioning

confidence: 99%

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Garlic Extract-Mediated Synthesis of ZnS Nanoparticles: Structural, Optical, Antibacterial, and Hemolysis Studies

Alnehia

Al-Odayni

Al-Hammadi

et al. 2023

Journal of Nanomaterials

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The green synthesis of zinc sulfide nanoparticles (ZnS NPs)-mediated plant extract is gaining importance because of its simplicity, cost-effectiveness, and ecofriendly nature. In this work, ZnS NPs were synthesized using garlic extract as NPs facilitating agent, characterized by Fourier transform infrared, X-ray diffraction, scanning electron microscope, and UV–visible, then their antibacterial and hemocompatibility were assayed. Analysis revealed a cubic phase, 2.33 nm crystallite size, and a 3.75 eV optical bandgap. Bioactivity test against Staphylococcus aureus and Escherichia coli indicated dose-dependent potency closer to that of azithromycin standard drug and more efficient on S. aureus (Gram-positive) than E. coli (Gram-negative) bacteria. Biocompatibility test in terms of erythrocyte hemolysis, in reference to normal saline and water as minimal and maximal controls, confirmed nontoxic substance up to 100 μg/mL as the highest examined concentration and at which a lysis of 2.9% was detected. Therefore, it could be concluded that this biogenic method is effective in producing ZnS NPs with desirable properties for potential biomedical applications.

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“…Sharma et al 14 showed that the doping of ZnS with transition metals such as Ag, Cu, Fe, and Mn act to reduce the recombination rate of the electron/hole pairs, compared to pure ZnS. Similarly, Al-Osta et al 15 showed that the doping of ZnS with Cr 3+ provides a reduction in the recombination of the electron/hole pairs due to the appearance of defects close to the conduction band, which move it to higher energy values.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial and electrical properties of ce‐ and ni‐doped zns nanoparticles obtained by a sonochemical method

Neto

Oliveira

Corrêa

et al. 2021

Int J Applied Ceramic Tech

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In this work, cerium-and nickel-codoped ZnS nanoparticles were obtained by a sonochemical method for 20 min. The nanoparticles were characterized by X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS), and microscopy electronic transmission (MET). The electrical properties are estimated through I-V curves and the antimicrobial activity was analyzed against E. coli (gram-negative) and S. aureus (gram-positive) bacteria using the diffusion disk methodology. The diffractograms indicate the obtaining of cubic structure ZnS for the pure sample, whereas the doped samples present the cubic and hexagonal structures of the ZnS. The bandgap reduced from 3.60 to 3.52 eV, for pure and codoped samples. I-V curves indicate an increase in resistivity with doping, being more evident for samples containing cerium. Antimicrobial activity increased as doping occurred, where the codoped sample showed the best results. Even for the low amount of dopant (1 mol%), the antimicrobial activity can be increased by about 50% for the codoped sample, compared to the pure ZnS. Thus, it is known that the doping of ZnS with cerium and nickel provides the stabilization of the hexagonal metastable phase, which acts to restrict electronic mobility and, consequently, improves the antimicrobial response of the material.

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Structural, morphological and optical properties of Cr doped ZnS nanoparticles prepared without any capping agent

Cited by 29 publications

References 22 publications

Pomegranate Peel Extract-Mediated Green Synthesis of ZnO-NPs: Extract Concentration-Dependent Structure, Optical, and Antibacterial Activity

Pomegranate Peel Extract-Mediated Green Synthesis of ZnO-NPs: Extract Concentration-Dependent Structure, Optical, and Antibacterial Activity

Garlic Extract-Mediated Synthesis of ZnS Nanoparticles: Structural, Optical, Antibacterial, and Hemolysis Studies

Antimicrobial and electrical properties of ce‐ and ni‐doped zns nanoparticles obtained by a sonochemical method

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