Synthesis of Silver Metal Nanoparticles Through Electric Arc Discharge Method: A Review

2016 ◽  
Vol 22 (1) ◽  
pp. 3-7 ◽  
Author(s):  
Pankaj Kumar ◽  
Purushottam Kunar Singh ◽  
Manowar Hussain ◽  
Alok Kumar Das
Keyword(s):  
Metal Nanoparticles ◽  
Arc Discharge ◽  
Electric Arc ◽  
Electric Arc Discharge ◽  
Discharge Method ◽  
Silver Metal

PREPARATION OF PURE COBALT NANOPARTICLES BY ELECTRIC ARC DISCHARGE METHOD IN ETHYLENE GLYCOL

2013 ◽  
Vol 27 (09) ◽  
pp. 1350057 ◽  
Author(s):  
S. HOSSEYNIZADEH KHEZRI ◽  
A. YAZDANI ◽  
R. KHORDAD ◽  
B. ABEDI RAVAN
Keyword(s):  
Ethylene Glycol ◽  
Arc Discharge ◽  
Cobalt Nanoparticles ◽  
Electric Arc ◽  
Visible Spectroscopy ◽  
Pure Cobalt ◽  
Electric Arc Discharge ◽  
Arc Current ◽  
Uv Visible ◽  
Discharge Method

Synthesis of Cobalt nanoparticles often entails toxic and expensive physical-chemistry methods. Fabrication of pure cobalt nanoparticles (NPs) using a simple and low-cost electric arc discharge method in ethylene glycol (EG) is suggested for the first time. The effect of different arc discharge currents (10, 20 and 30 A) on the size and optical absorption of the NPs are studied. Dynamic light scattering (DLS) and UV-visible spectroscopy result indicate that at an arc current of 10 A NPs of about 92.95 nm are produced and increasing the arc current leads to larger NPs. UV-visible spectroscopy data shows that the solvent gets more and more transparent with time. Sonication proves that this effect is related to agglomeration of the NPs. Formation of the pure Co NPs are evidenced by means of X-ray diffraction (XRD) measurements which gives an average size of about 21 nm using Scherrer's relation. Magnetization measurements of the samples are carried out by Alternating Gradient Force Magnetometer (AGFM). The results demonstrate the ability of the arc discharge method for direct formation of Co NPs in EG medium.

PURIFICATION OF CARBON NANOTUBES PRODUCED BY THE ELECTRIC ARC-DISCHARGE METHOD

2021 ◽  
pp. 101389
Author(s):  
Hélio Ribeiro ◽  
Mariane Cristina Schnitzler ◽  
Wellington Marcos da Silva ◽  
Adelina Pinheiro Santos
Keyword(s):  
Carbon Nanotubes ◽  
Arc Discharge ◽  
Electric Arc ◽  
Electric Arc Discharge ◽  
Discharge Method

Microfabricated Fiber Probe by Combination of Electric Arc Discharge and Chemical Etching Techniques

2012 ◽  
Vol 462 ◽  
pp. 38-41 ◽  
Author(s):  
Wan Maisarah Mukhtar ◽  
P. Susthitha Menon ◽  
Sahbudin Shaari
Keyword(s):  
Optical Fibers ◽  
Chemical Etching ◽  
Arc Discharge ◽  
Etching Rate ◽  
Electric Arc ◽  
Buffer Solution ◽  
Fiber Probe ◽  
Optical Fiber Probes ◽  
Electric Arc Discharge ◽  
Fiber Probes

In this study, optical fiber probes were fabricated by combination of electric arc discharge and chemical etching techniques. Size of tips diameters fabricated using different etching solutions were observed. When the optical fibers were pulled and heated by the electric arc discharge using a fusion splicer, fiber tips with few microns in diameter were obtained. To minimize the tips diameter, the pulled fiber probes were etched vertically for 10 minutes using two different etching solutions namely 49% HF and HF buffer solution (49% HF and 40% NH4F) with ratio of 2:1. A thick overlayer was added on top of the HF solution to prevent dangerous vapors escape to the environment. When the tapered part of the pulled fiber (FP1) was dipped into 49% HF solution, the diameter of tip was slightly decreased from 4.41μm to 1.31μm with etching rate of 5.17x10-3 μms-1. When the pulled fiber (FP2) was etched into HF buffer solution, the etching rate was increased up to 52.35% with the etching rate of 10.85x10-3μms-1. The tip diameter was reduced from 7.01μm to 468.9 nm in diameter. Combination of “heat and pull” technique with chemical etching by using HF buffer solution produced fiber probe with small tip diameter.

A study of helium gas clean-up in an electric arc discharge

1952 ◽  
Vol 71 (2) ◽  
pp. 159-164 ◽  
Author(s):  
M. J. Reddan ◽  
G. F. Rouse
Keyword(s):  
Arc Discharge ◽  
Electric Arc ◽  
Helium Gas ◽  
Electric Arc Discharge
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