Abstract
Nanometer nickel powders have been prepared using the polyol method with NaOH, Ni(NO 3) 2·6H 2O, ethylene glycol (EG), and polyvinylpyrrolidone (PVP) as raw materials. The thermodynamics of the reaction system was studied, and the E–pH diagram of Ni–EG–H 2O was plotted. The oxidation products of EG were predicted from the E–pH diagram, and CO 3 2− in alkaline solutions was identified as the product through the IR spectrum and CaCO 3 sediment. Field-emission scanning electron micrograph (FE-SEM) showed that spherical nanometer nickel powders were obtained.
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