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Optimal synthesis and characterization of Ag nanofluids by electrical explosion of wires in liquids.

Ju Park E, Won Lee S, Bang IC, Park HW - Nanoscale Res Lett (2011)

Bottom Line: In this study, we optimized the fabrication method and examined the effects of manufacturing process parameters.The average Ag nanoparticle size in water was 118.9 nm and the zeta potential was -42.5 mV.The critical heat flux of the 0.001-vol.% Ag nanofluid was higher than pure water.

View Article: PubMed Central - HTML - PubMed

Affiliation: School of Mechanical and Advanced Materials Engineering, UNIST 100 Banyeon-ri, Eonyang-eup, Ulju-gun, Ulsan Metropolitan City 689-798, Republic of Korea. hwpark@unist.ac.kr.

ABSTRACT
Silver nanoparticles were produced by electrical explosion of wires in liquids with no additive. In this study, we optimized the fabrication method and examined the effects of manufacturing process parameters. Morphology and size of the Ag nanoparticles were determined using transmission electron microscopy and field-emission scanning electron microscopy. Size and zeta potential were analyzed using dynamic light scattering. A response optimization technique showed that optimal conditions were achieved when capacitance was 30 μF, wire length was 38 mm, liquid volume was 500 mL, and the liquid type was deionized water. The average Ag nanoparticle size in water was 118.9 nm and the zeta potential was -42.5 mV. The critical heat flux of the 0.001-vol.% Ag nanofluid was higher than pure water.

No MeSH data available.


Related in: MedlinePlus

Voltage and current waveforms under various capacitances: Voltage (a), current (b), and deposited energy (c) as a function of time (black line, 30 μF; red line, 7.5 μF).
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Figure 4: Voltage and current waveforms under various capacitances: Voltage (a), current (b), and deposited energy (c) as a function of time (black line, 30 μF; red line, 7.5 μF).

Mentions: Figure 4 shows the voltage and current waveforms under various capacitances. Under the same discharge voltage, the pulsed voltage was faster and higher with 30 μF than with 7.5 μF. The increase in capacitance resulted in a slight increase in current and energy deposition.


Optimal synthesis and characterization of Ag nanofluids by electrical explosion of wires in liquids.

Ju Park E, Won Lee S, Bang IC, Park HW - Nanoscale Res Lett (2011)

Voltage and current waveforms under various capacitances: Voltage (a), current (b), and deposited energy (c) as a function of time (black line, 30 μF; red line, 7.5 μF).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211281&req=5

Figure 4: Voltage and current waveforms under various capacitances: Voltage (a), current (b), and deposited energy (c) as a function of time (black line, 30 μF; red line, 7.5 μF).
Mentions: Figure 4 shows the voltage and current waveforms under various capacitances. Under the same discharge voltage, the pulsed voltage was faster and higher with 30 μF than with 7.5 μF. The increase in capacitance resulted in a slight increase in current and energy deposition.

Bottom Line: In this study, we optimized the fabrication method and examined the effects of manufacturing process parameters.The average Ag nanoparticle size in water was 118.9 nm and the zeta potential was -42.5 mV.The critical heat flux of the 0.001-vol.% Ag nanofluid was higher than pure water.

View Article: PubMed Central - HTML - PubMed

Affiliation: School of Mechanical and Advanced Materials Engineering, UNIST 100 Banyeon-ri, Eonyang-eup, Ulju-gun, Ulsan Metropolitan City 689-798, Republic of Korea. hwpark@unist.ac.kr.

ABSTRACT
Silver nanoparticles were produced by electrical explosion of wires in liquids with no additive. In this study, we optimized the fabrication method and examined the effects of manufacturing process parameters. Morphology and size of the Ag nanoparticles were determined using transmission electron microscopy and field-emission scanning electron microscopy. Size and zeta potential were analyzed using dynamic light scattering. A response optimization technique showed that optimal conditions were achieved when capacitance was 30 μF, wire length was 38 mm, liquid volume was 500 mL, and the liquid type was deionized water. The average Ag nanoparticle size in water was 118.9 nm and the zeta potential was -42.5 mV. The critical heat flux of the 0.001-vol.% Ag nanofluid was higher than pure water.

No MeSH data available.


Related in: MedlinePlus