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Pulsed Laser Fabrication of FeS and FeS@Ag Core–Shell Nanoparticles for Antibacterial Applications |
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PP: 133-140 |
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doi:10.18576/ijtfst/150110
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Author(s) |
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M. H. Mahdi,
Raghad R. Mahdi,
Rafal Dawood Ali,
Safaa Fadhil shnain,
A. N. Abd,
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Abstract |
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| This study describes the preparation of FeS and FeS@Ag using a pulsed laser process with specific energy and frequency, followed by the deposition of the two materials using a special syringe onto porous silicon prepared by N-type photoelectron-etching. The prepared films underwent structural and optical characterization. X-ray diffraction (XRD) analysis confirmed the structure of both films, with the results indicating a crystalline size exceeding 10 nm. AFM and SEM analysis revealed aggregated iron spheroids coated with silver nanoparticles, forming tubes with dimensions exceeding 1 μm. These results confirmed that the prepared films were smooth and transparent with nanoparticles of varying sizes on their surface. High transmittance was observed across the surfaces of both films, increasing with wavelength and reaching a peak at 900 nm, which corresponds to relatively low absorption. The optical energy gap of the two membranes was calculated using FTIR spectroscopy to determine the effective FeS and FeS@Ag bonds. This was confirmed by UV-Vis and visible spectroscopy, which showed that both materials exhibited high absorbance in the UV range. These membranes were subsequently used as antibacterial agents. This study demonstrated the ease of preparing these materials and their effectiveness against a variety of serious pathogens in living organisms. |
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