Structural, Optical, and Bioactivity Properties of Silver-Doped Zinc Sulfide Nanoparticles Synthesized Using Plectranthus barbatus Leaf Extract

Alnehia, Adnan; Al-Sharabi, Annas; Al-Hammadi, A. H.; Al-Odayni, Abdel-Basit; Saeed, Waseem Sharaf; Alrahlah, Ali

doi:10.1155/2023/1399703

Cited by 13 publications

(4 citation statements)

References 53 publications

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“…Therefore, it could be expected that these phytocompounds can serve as great capping and stabilizing agents for Zn 2+ ion trapping and thus facilitate NPs production [ 42 , 43 ]. Depending on these major chemicals, a mechanism for the biosynthesis route of ZnO NPs can be predicted [ 31 ]. As a result, Figure 6 depicts a proposed mechanism in which the phenolic and carboxylic functional groups of tannins, amino acids, and other phenolic derivatives might be proposed as capping and stabilizing agents for Zn 2+ ions.…”

Section: Resultsmentioning

confidence: 99%

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Lepidium sativum Seed Extract-Mediated Synthesis of Zinc Oxide Nanoparticles: Structural, Morphological, Optical, Hemolysis, and Antibacterial Studies

Alnehia,

Al-Sharabi,

Al-Odayni

et al. 2023

Bioinorganic Chemistry and Applications

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Nanomaterials have unique physicochemical properties compared to their bulk counterparts. Besides, biologically synthesized nanoparticles (NPs) have proven superior to other methods. This work aimed to biosynthesize zinc oxide (ZnO) NPs using an aqueous extract of Lepidium sativum seed. The obtained ZnO NPs were characterized by X-ray diffraction, scanning electron microscopy, Fourier transform infrared, and ultraviolet-visible spectroscopy. The in vitro antibacterial activity of ZnO NPs against Gram-positive (S. aureus) and Gram-negative (E. coli) bacteria was assessed using the disk diffusion technique. The hemolytic impact was quantified spectrophotometrically. The results indicated a 24.2 nm crystallite size, a hexagonal structure phase, and a 3.48 eV optical bandgap. Antibacterial studies revealed a dose-dependent response with comparable activity to the standard drug (gentamicin) and higher activity against S. aureus than E. coli, e.g., the zone of inhibition at 120 mg/mL was 23 ± 1.25 and 16 ± 1.00 mm, respectively. The hemolysis assay showed no potential harm due to ZnO NPs toward red blood cells if utilized in low doses. As a result, it could be concluded that the reported biogenic method for synthesizing ZnO NPs is promising, resulting in hemocompatible NPs and comparable bactericidal agents.

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Section: Resultsmentioning

confidence: 99%

“…The prepared solution was filtered, and the precipitate was washed twice with DW. The washed precipitate was air-dried for 48 h at room temperature [ 23 , 31 ]. Finally, the obtained product was annealed at 200°C for 90 min, and the final powder was subjected to various characterizations.…”

Section: Methodsmentioning

confidence: 99%

Lepidium sativum Seed Extract-Mediated Synthesis of Zinc Oxide Nanoparticles: Structural, Morphological, Optical, Hemolysis, and Antibacterial Studies

Alnehia,

Al-Sharabi,

Al-Odayni

et al. 2023

Bioinorganic Chemistry and Applications

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“…The antibacterial effectiveness of Fe 2 O 3 –CuO–CuFe 2 O 4 NC was evaluated in vitro using the widely recognized disk diffusion method 39 – 41 . The assessment involved testing against specific Gram-positive ( S. aureus ) and Gram-negative ( E. coli ) bacterial strains, with azithromycin (AzM) serving as the reference standard 35 .…”

Section: Materials Methods and Characterization Techniquesmentioning

confidence: 99%

Optical, structural and antibacterial properties of phase heterostructured Fe2O3–CuO–CuFe2O4 nanocomposite

Alnehia,

Hadi,

Alnahari

et al. 2024

Sci Rep

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The synthesis of the Fe2O3–CuO–CuFe2O4 nanocomposite was effectively achieved through the sol–gel technique, utilizing ethanol as a reactive fuel. Investigation of the nanocomposite’s structure via X-ray Diffraction confirmed the coexistence of Fe2O3, CuO, and CuFe2O4 phases within the material. The Scherrer equation was applied to determine an average crystallite size ranging from 60 to 95 nm. UV–visible spectroscopy studies suggested the material possesses an approximate energy bandgap of 4 eV. Scanning Electron Microscopy provided insights into the nanocomposite’s surface morphology, which exhibited a porous and heterogeneous aggregation of particles in various sizes and shapes. When tested for antibacterial efficacy, the nanocomposite exhibited activity against gram-positive S. aureus with a maximum zone of inhibition (ZOI) measuring 9 mm at the highest concentration, whereas no inhibitory effect was detected against gram-negative E.coli.

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“…On the other hand, essential oils and amino acids can stabilize the sulfde ions. Tus, by further hydrolysis of the coordinated ions, the end NPs can be obtained [53].…”

Section: Synthetic Mechanismmentioning

confidence: 99%

Plectranthus barbatus Leaf Extract-Mediated Synthesis of ZnS and Mg-Doped ZnS NPs: Structural, Optical, Morphological, and Antibacterial Studies

Al-Hammadi,

Alnehia,

Al-Sharabi

et al. 2023

Nanomaterials and Nanotechnology

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In the current study, the researchers have explored the influence of doped Mg ions on the optical, morphological, and structural properties of zinc sulfide (ZnS) nanoparticles (NPs). The green technique was employed to prepare pure and 2% and 5% Mg-doped ZnS NPs using the Plectranthus barbatus leaf extract as a capping agent. XRD, SEM, FTIR, and UV-visible were used in the investigation process. The XRD results showed that all the synthesized materials have a cubic structure with space group F-43m. The Dav was nearly in the range of 2.02–2.20 nm. The SEM images illustrated that NPs were agglomerated. The UV-visible results showed that the optical bandgap increased as Mg2+ ions increased, which was in the range of 3.81–4.42 eV. The absorption shoulder of the prepared NPs is blue-shifted with increasing dopant concentration. The FTIR spectrum gives characteristic peaks for Zn-S bonds and asserts NPs’ formation. The antibacterial check against E. coli and S. aureus bacterial strains revealed that pure and Mg-doped ZnS NPs have higher activity for both bacterial strains. The results have shown that the prepared materials can be used for antibacterial activities and optoelectronic applications.

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Structural, Optical, and Bioactivity Properties of Silver-Doped Zinc Sulfide Nanoparticles Synthesized Using Plectranthus barbatus Leaf Extract

Cited by 13 publications

References 53 publications

Lepidium sativum Seed Extract-Mediated Synthesis of Zinc Oxide Nanoparticles: Structural, Morphological, Optical, Hemolysis, and Antibacterial Studies

Lepidium sativum Seed Extract-Mediated Synthesis of Zinc Oxide Nanoparticles: Structural, Morphological, Optical, Hemolysis, and Antibacterial Studies

Optical, structural and antibacterial properties of phase heterostructured Fe2O3–CuO–CuFe2O4 nanocomposite

Plectranthus barbatus Leaf Extract-Mediated Synthesis of ZnS and Mg-Doped ZnS NPs: Structural, Optical, Morphological, and Antibacterial Studies

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