Preparation of Nanocrystalline Nickel Powders by Chemical Reduction in Nonaqueous Media

2007 ◽  
pp. 2107-2110
Author(s):  
Ji Un Im ◽  
Seong Yup Jun ◽  
Seong Soo Hong ◽  
Gun Dae Lee ◽  
Kwang Ho Kim ◽  
...  
Keyword(s):  
Chemical Reduction ◽  
Nanocrystalline Nickel ◽  
Nonaqueous Media ◽  
Nickel Powders

Preparation of Nanocrystalline Nickel Powders by Chemical Reduction in Nonaqueous Media

2007 ◽  
Vol 336-338 ◽  
pp. 2107-2110
Author(s):  
Ji Un Im ◽  
Seong Yup Jun ◽  
Seong Soo Hong ◽  
Gun Dae Lee ◽  
Kwang Ho Kim ◽  
...  
Keyword(s):  
Chemical Reduction ◽  
Nanocrystalline Nickel ◽  
Nonaqueous Media ◽  
Nickel Powders

scholarly journals Preparation of Nickel Powders by the Reduction of Ni(OH)2Reactant Slurries from Nonaqueous Media

2005 ◽  
Vol 15 (5) ◽  
pp. 334-339
Author(s):  
Eun Young Choi ◽  
Yoon Bok Lee ◽  
Suk Young Yoon ◽  
Kwang Ho Kim ◽  
Jin Chun Kim ◽  
...  
Keyword(s):  
Nonaqueous Media ◽  
Nickel Powders

Synthesis of Fine Nickel Powders by Solvothermal Method

2007 ◽  
Vol 334-335 ◽  
pp. 1145-1148 ◽  
Author(s):  
Yin Ye ◽  
Fang Li Yuan ◽  
Li Min Zhou ◽  
Hai Tao Huang
Keyword(s):  
Thermal Stability ◽  
Chemical Reduction ◽  
Spherical Shape ◽  
Butyl Alcohol ◽  
Nickel Powders ◽  
Good Crystallinity ◽  
Average Size ◽  
Solvothermal Conditions ◽  
Thermal Stability Of ◽  
Fine Nickel

Fine nickel powders have been prepared by chemical reduction between nickel acetate and alcohol under solvothermal conditions. The effect of adding surfactant and varying solvent on the particle size of the as-synthesized nickel powders have been explored. SEM, XRD and TG were employed to characterize the size, morphology, crystalline structure and the thermal stability of the as-synthesized nickel powders. It is revealed that the FCC-structured nickel powders are of uniform spherical shape with good crystallinity and thermal stability. Typically, nickel powders with an average size of 300 nm were obtained at 200°C for 8 h using 0.04 mol/L solution of Ni(CH3COO)2·4H2O in n-butyl alcohol under solvothermal conditions.

Preparation of Nickel Powders by the Reduction of Hydrazine of Ni(OH)2 Reactant Slurries from Nonaqueous Media

2006 ◽  
pp. 722-725
Author(s):  
Yang Do Kim ◽  
Eun Young Choi ◽  
Yoon Bok Lee ◽  
Young Seok Kim ◽  
Hyong Kuk Kim ◽  
...  
Keyword(s):  
Nonaqueous Media ◽  
Nickel Powders

A Study for Synthesis of Nanobelt and Nanowire Nickel Powders by Wet Chemical Method

2007 ◽  
Vol 544-545 ◽  
pp. 83-86
Author(s):  
Seung Yup Jeon ◽  
Eun Ju Chae ◽  
Won Ki Lee ◽  
Gun Dae Lee ◽  
Seong Soo Hong ◽  
...  
Keyword(s):  
Chemical Reduction ◽  
Wet Chemical Method ◽  
Nickel Ion ◽  
Sodium Tartrate ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Nickel Powders ◽  
Key Factor ◽  
Wet Chemical ◽  
Anion Surfactant

Ni nanosheet has been prepared at various temperature and time with anion surfactant by chemical reduction of the nickel ion complexes formed from complexing reagent in a pressurized vessel. Sample was characterized by the means of an X-ray diffractomer (XRD), a field emission scanning electron microscopy (FESEM), an energy dispersive X-ray spectrometer (EDS), a selected-area electron diffraction (SAED) and a high sensitive magnetometer (HSM). The use of SDBS and sodium tartrate could be a key factor for the formation and growth of Ni nanosheet.

A study of nanocrystalline nickel powders developed via high-energy ball milling

2019 ◽  
Vol 102 (9-12) ◽  
pp. 3657-3665 ◽  
Author(s):  
Bukola Joseph Babalola ◽  
Mxolisi Brendon Shongwe ◽  
Azeez Lawan Rominiyi ◽  
Samson Olaitan Jeje ◽  
Peter Apata Olubambi
Keyword(s):  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Nanocrystalline Nickel ◽  
Nickel Powders ◽  
Energy Ball

scholarly journals ULTRAFINECOPPER AND NICKEL POWDERS INTHE ELECTRO-CATALYTICHYDROGENATIONOF ORGANIC COMPOUNDS

2021 ◽  
Vol 74 (2) ◽  
pp. 32-48
Author(s):  
E.A. SOBOLEVA ◽  
◽  
Ya.A. VISURKHANOVA ◽  
N.M. IVANOVA ◽  
М.Е. BEISENBEKOVA ◽  
...  
Keyword(s):  
Electrocatalytic Activity ◽  
Chemical Reduction ◽  
Ethanol Solution ◽  
Metal Powders ◽  
Nickel Powders ◽  
Polymer Stabilizer ◽  
Skeletal Copper ◽  
Ultrafine Copper ◽  
Copper Cations ◽  
Polymer Stabilizers

Ultrafine copper and nickel powders are synthesized by a chemical reduction of the metal cations from their salts in an aqueous ethanol solution without and with the addition of a polymer stabilizer (polyvinylpyrrolidone and polyvinyl alcohol). The structure and morphological features of the prepared metal powders were investigated by X-ray phase analysis and electron microscopy. The electrocatalytic properties of the Cu and Ni powders have been studied in the electrohydrogenation of acetophenone, nitrobenzene, p-nitroaniline, and cyclohexanone. A higher electrocatalytic activity of Cu powders, as well as skeletal copper, was established in the electrohydrogenation of the first three of the listed compounds in comparison with nickel powders, which is explained by the ability of copper cations to be reduced from its oxides in the electrochemical system under investigation. It is shown that the use of polymer stabilizers in the synthesis of Cu and Ni powders contributes to reducing metal particle sizes, but does not increase the electrocatalytic activity of the corresponding metal powders.

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