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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.


Related in: MedlinePlus

Schematic diagram of an electric discharge cell. Where E is two copper circular plane electrodes (0.2 cm thickness and 5 cm diameter), C is the reaction chamber (cylindrical Pyrex glass of 7 cm diameter and 15 cm length with 2 cm gap spacing, VS is the vacuum system, VG is the vacuum gauge, H is the sample holder, and B is cuvette place holder.
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Fig1: Schematic diagram of an electric discharge cell. Where E is two copper circular plane electrodes (0.2 cm thickness and 5 cm diameter), C is the reaction chamber (cylindrical Pyrex glass of 7 cm diameter and 15 cm length with 2 cm gap spacing, VS is the vacuum system, VG is the vacuum gauge, H is the sample holder, and B is cuvette place holder.

Mentions: In order to setup argon, oxygen glow discharge plasma sources, two copper circular plane electrodes are used. The two electrodes are centered in the reaction chamber axes. The gas has injected into the reaction chamber through the side flange. The reaction chamber was evacuated up to 10−3 mmHg before the gas inlet. The gas pressure has controlled using vacuum system and gauges to 0.11 mmHg and kept constant during the measurement procedure. The discharge voltages of the argon and oxygen plasma were 248 and 358 volt respectively. More details of the plasma source setup can be found in (Shaaban et al. 2013). Figure 1 shows a schematic diagram of the discharge plasma setup. The strong emission spectral lines of argon, oxygen glow discharge plasma sources and mercury light source are listed in Table 1 (Reader et al. 1996; Bacławski and Musielok 2008).Figure 1


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)

Schematic diagram of an electric discharge cell. Where E is two copper circular plane electrodes (0.2 cm thickness and 5 cm diameter), C is the reaction chamber (cylindrical Pyrex glass of 7 cm diameter and 15 cm length with 2 cm gap spacing, VS is the vacuum system, VG is the vacuum gauge, H is the sample holder, and B is cuvette place holder.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Fig1: Schematic diagram of an electric discharge cell. Where E is two copper circular plane electrodes (0.2 cm thickness and 5 cm diameter), C is the reaction chamber (cylindrical Pyrex glass of 7 cm diameter and 15 cm length with 2 cm gap spacing, VS is the vacuum system, VG is the vacuum gauge, H is the sample holder, and B is cuvette place holder.
Mentions: In order to setup argon, oxygen glow discharge plasma sources, two copper circular plane electrodes are used. The two electrodes are centered in the reaction chamber axes. The gas has injected into the reaction chamber through the side flange. The reaction chamber was evacuated up to 10−3 mmHg before the gas inlet. The gas pressure has controlled using vacuum system and gauges to 0.11 mmHg and kept constant during the measurement procedure. The discharge voltages of the argon and oxygen plasma were 248 and 358 volt respectively. More details of the plasma source setup can be found in (Shaaban et al. 2013). Figure 1 shows a schematic diagram of the discharge plasma setup. The strong emission spectral lines of argon, oxygen glow discharge plasma sources and mercury light source are listed in Table 1 (Reader et al. 1996; Bacławski and Musielok 2008).Figure 1

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