Antibacterial activities of Bi-Ag co-doped cobalt ferrite and their ZnO/Ag nanocomposite/s

Kalia, Shyam; Dhiman, Vikas; T, Tchouank Tekou Carol; Basandrai, Deepak; Prasad, Nupur

doi:10.1016/j.inoche.2022.110382

Cited by 7 publications

(1 citation statement)

References 39 publications

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“…There have also been reports on the synthesis of ZnO-based composite particles by dissolving inorganic metal salts other than Zn compounds, such as silver nitrate, in the initial solution [10,11]. The addition of other materials, including Ag, to ZnO can lead to improved catalytic, electrical, and antibacterial properties, with potential applications in photocatalysts [10,11], electrocatalysts [12], antibacterial agents [13,14], pressure sensors [15], gas sensors [16], and switching devices [17]. In particular, Ag-loaded ZnO particles are highly efficient photocatalysts because they serve as electron sinks and delay deactivation due to the recombination of excited electrons and holes [11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO and ZnO/Ag fine particles by plasma-assisted inkjet processing

Hato,

Nitta,

Muneoka

et al. 2024

J. Phys. D: Appl. Phys.

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Zinc oxide (ZnO) and its composite particles with controlled sizes, shapes, compositions, and physical and chemical properties are required for a wide variety of applications. In this study, we report a simple method for synthesising ZnO and ZnO/Ag composite particles via atmospheric-pressure plasma processing using inkjet droplets. Depending on the initial solution concentration, ZnO particles containing voids, with average sizes ranging from submicrons to several microns can be synthesised. Energy dispersive X-ray spectroscopy measurements of the synthesised ZnO/Ag particles suggest that the molar ratio of Ag to Zn in the initial solution was retained in the synthesised particles. A high surface-enhanced Raman scattering effect was observed in the particles synthesised from the solution with an Ag molar ratio of 50 % to the total solute. The proposed method enables the synthesis of ZnO particles of various sizes, microstructures, compositions and optical properties with relatively narrow size distributions.

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Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO and ZnO/Ag fine particles by plasma-assisted inkjet processing

Hato,

Nitta,

Muneoka

et al. 2024

J. Phys. D: Appl. Phys.

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Facile Synthesis and Biophysical Characterization of Novel Zinc Oxide/Fe3O4 Hybrid Nanocomposite as a Potentially Active Agent in Sunscreens

Elbrolesy,

Elhussiny,

Abdou

et al. 2023

Arab J Sci Eng

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Zinc oxide nanoparticles (ZnO NPs) are attractive sunscreens for UV protection, but they still face some challenges due to their white color and skin whitening, and the extent of UV blocking is still limited to UV-B. Therefore, the present work aimed to develop novel sunscreen agents based on ZnO/Fe3O4 hybrid nanocomposites. ZnO/Fe3O4 hybrid nanocomposites were prepared using a facile one-step combustion method and characterized by XRD, FTIR, FESEM, and UV–Vis diffuse reflectance techniques. The in vitro sun protection factor (SPF) and antioxidant activity of the prepared samples were carried out by spectrophotometric methods. The biocompatibility potential was tested on the normal (Human lung fibroblast: WI38) and cancerous (Hepatocellular carcinoma: HEPG-2) cell lines and the antibacterial activity was tested against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus. Bare ZnO NPs and ZnO/Fe3O4 hybrid nanocomposites had pure structures with average particle sizes on a scale below 100 nm. The samples had antibacterial and antioxidant activity as well as the potential for biocompatibility and anticancer activity (cell viability was 80% for all nanocomposites up to 6.25 μg/mL indicating non-toxicity). The nanocomposite presented good UV absorption and SPF values (SPF = 12.2–14) not too far from those of bare ZnO (SPF = 15.4) and achieved extended protection over the UV and visible range. ZnO/Fe3O4 hybrid nanocomposites are colored compounds that can match a desired tanned skin tone and have biophysical properties that make them a promising future as a cosmetic UV protectant.

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