Preparation and Characterization of NiO Nanoparticles by Anodic Arc Plasma Method

Abstract

NiO nanoparticles with average particle size of 25 nm were successfully prepared by anodic arc plasma method. The composition, morphology, crystal microstructure, specific surface area, infrared spectra, and particle size distribution of product were analyzed by using X-ray diffraction (XRD), transmission electron microscopy (TEM) and the corresponding selected area electron diffraction (SAED), Fourier transform infrared (FTIR) spectrum, and Brunauer-Emmett-Teller (BET)N2adsorption. The experiment results show that the NiO nanoparticles are bcc structure with spherical shape and well dispersed, the particle size distribution ranging from 15 to 45 nm with the average particle size is about 25 nm, and the specific surface area is 33 m2/g. The infrared absorption band of NiO nanoparticles shows blue shifts compared with that of bulk NiO.

Biosynthesis of Nickel Oxide Nanoparticles Using Fusarium verticillioides (Sacc.) and Their Biological Activity against Some Causative Agents of Mycotic Keratitis

“…The FTIR spectra at room temperature in the range of (200-4000) cm -1 for the annealed NiONPs samples at 400 0 C and 600 0 C are shown in Fig.4.The absorption band at 439 cm -1 is assigned to Ni-O stretching mode, which is a clear evidence for the presence of the crystalline NiO (Gondal et al, 2012;Rahdar et al, 2015 andSalavati-Niasari et al, 2009).The broadness of the absorption band indicates that the NiO powders are nanocrystals (Qiao et al, 2009). The absorption bands at 555 cm -1 and 3389 cm -1 attributed to Ni-O-H and O-H stretching bonds, respectively (Rahdar et al, 2015).…”

“…Other studies also synthesized the NiONPs with different particle size in nano range using different methods. Using the solid-state thermal decomposition method and the anodic arc plasma method, the particle size of NiONPs was 15nm and 15-45 nm, respectively (Barakat et al, 2013 andQiao et al, 2009). While the average particle size of biosynthesized NiONPs using the dead biomass of the fungus Hypocrea lixii was 3.8 and 1.25nm (Salvadori et al, 2015) which consider a better method to produce nanoparticles.…”

“…In addition, it was used in many potential applications such as in battery electrodes, gas sensors, photo-electronic devices….etc. (Gondal et al, 2012;Qiao et al, 2009 andSalavati-Niasari et al, 2009). S.A.…”

Electrospun Metallic Nanofibers Fabricated by Electrospinning and Metallization

“…8c and 8d), new crystalline peaks were observed at 2θ = 32.5, 35.5, 38.7, 48.7, 53.4, and 58.5, corresponding to the (110), (002), (111), (202), (020), and (202) reflections, for CuO cubic crystals, [40] and 2θ = 37.3, 43.4, 63.0, 75.5, and 79.6, corresponding to the (111), (200), (220), (311), and (222) reflections, for NiO cubic crystals, respectively. [41,42] The results suggested the transformation of pure metals to metallic oxides (CuO, NiO) during annealing processing. Specifically, in case of annealing temperature at 250 ºC, different crystalline peaks were observed presumably due to the formation of intermediate metal oxide crystals (Cu 2 O), which is however not clear at present.…”

Effects of Potential Modes on Performances of Electrodeposited Poly[Ni(salen)]/MWCNTs Composite as Supercapacitor Electrode Material

“…For Ni(salen) monomers, before electrochemical polymerization, it can be seen that the broad absorption band centered at 3440 cm ¹1 is attributable to the band -OH stretching vibrations due to the adsorption of water in open air. 17 The bands in the range of 3000-2835 cm ¹1 is assigned to CH 2 , and the appearance of protons as a doublet is due to mutual coupling or a fluctuation behavior generated by (-CH 2 H 2 C-) moieties. 18 Moreover, the C=N imine stretching band is observed at around 1632 cm…”