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Irradiation of silver and agar/silver nanoparticles with argon, oxygen glow discharge plasma, and mercury lamp.

Ahmad MM, Abdel-Wahab EA, El-Maaref AA, Rawway M, Shaaban ER - Springerplus (2014)

Bottom Line: The irradiation effect of argon, oxygen glow discharge plasma, and mercury lamp on silver and agar/silver nanoparticle samples is studied.The irradiation time dependence of the synthesized silver and agar/silver nanoparticle absorption spectra and their antibacterial effect are studied and compared.The SEM results for both samples showed nanoparticle formation with mean size about 50 nm and 40 nm respectively.

View Article: PubMed Central - PubMed

Affiliation: Physics Department, Faculty of science, Al-Azhar University-Assuit branch, Assuit, Egypt.

ABSTRACT
The irradiation effect of argon, oxygen glow discharge plasma, and mercury lamp on silver and agar/silver nanoparticle samples is studied. The irradiation time dependence of the synthesized silver and agar/silver nanoparticle absorption spectra and their antibacterial effect are studied and compared. In the agar/silver nanoparticle sample, as the irradiation time of argon glow discharge plasma or mercury lamp increases, the peak intensity and the full width at half maximum, FWHM, of the surface plasmon resonance absorption band is increased, however a decrease of the peak intensity with oxygen glow plasma has been observed. In the silver nanoparticle sample, as the irradiation time of argon, oxygen glow discharge plasma or mercury lamp increases, the peak intensity of the surface plasmon resonance absorption band is increased, however, there is no significant change in the FWHM of the surface plasmon resonance absorption band. The SEM results for both samples showed nanoparticle formation with mean size about 50 nm and 40 nm respectively. Throughout the irradiation time with the argon, oxygen glow discharge plasma or mercury lamp, the antibacterial activity of several kinds of Gram-positive and Gram-negative bacteria has been examined.

No MeSH data available.


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Variation of FWHM of silver and agar/silver samples after irradiation with argon plasma.
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Fig13: Variation of FWHM of silver and agar/silver samples after irradiation with argon plasma.

Mentions: Figures 13, 14, and 15 show the variation of the FWHM of silver and agar/silver nanoparticle samples after irradiation with argon, oxygen plasma and mercury lamp respectively. It is observed that, there is no change of FWHM for silver nanoparticle sample irradiated with argon plasma however the FWHM is increased rapidly for agar/silver nanoparticle sample. In the case of oxygen plasma irradiation the FWHM remains constant for both samples.Figure 13


Irradiation of silver and agar/silver nanoparticles with argon, oxygen glow discharge plasma, and mercury lamp.

Ahmad MM, Abdel-Wahab EA, El-Maaref AA, Rawway M, Shaaban ER - Springerplus (2014)

Variation of FWHM of silver and agar/silver samples after irradiation with argon plasma.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4150921&req=5

Fig13: Variation of FWHM of silver and agar/silver samples after irradiation with argon plasma.
Mentions: Figures 13, 14, and 15 show the variation of the FWHM of silver and agar/silver nanoparticle samples after irradiation with argon, oxygen plasma and mercury lamp respectively. It is observed that, there is no change of FWHM for silver nanoparticle sample irradiated with argon plasma however the FWHM is increased rapidly for agar/silver nanoparticle sample. In the case of oxygen plasma irradiation the FWHM remains constant for both samples.Figure 13

Bottom Line: The irradiation effect of argon, oxygen glow discharge plasma, and mercury lamp on silver and agar/silver nanoparticle samples is studied.The irradiation time dependence of the synthesized silver and agar/silver nanoparticle absorption spectra and their antibacterial effect are studied and compared.The SEM results for both samples showed nanoparticle formation with mean size about 50 nm and 40 nm respectively.

View Article: PubMed Central - PubMed

Affiliation: Physics Department, Faculty of science, Al-Azhar University-Assuit branch, Assuit, Egypt.

ABSTRACT
The irradiation effect of argon, oxygen glow discharge plasma, and mercury lamp on silver and agar/silver nanoparticle samples is studied. The irradiation time dependence of the synthesized silver and agar/silver nanoparticle absorption spectra and their antibacterial effect are studied and compared. In the agar/silver nanoparticle sample, as the irradiation time of argon glow discharge plasma or mercury lamp increases, the peak intensity and the full width at half maximum, FWHM, of the surface plasmon resonance absorption band is increased, however a decrease of the peak intensity with oxygen glow plasma has been observed. In the silver nanoparticle sample, as the irradiation time of argon, oxygen glow discharge plasma or mercury lamp increases, the peak intensity of the surface plasmon resonance absorption band is increased, however, there is no significant change in the FWHM of the surface plasmon resonance absorption band. The SEM results for both samples showed nanoparticle formation with mean size about 50 nm and 40 nm respectively. Throughout the irradiation time with the argon, oxygen glow discharge plasma or mercury lamp, the antibacterial activity of several kinds of Gram-positive and Gram-negative bacteria has been examined.

No MeSH data available.


Related in: MedlinePlus