Preparation of nanometer-sized nickel oxide by hydrothermal decomposition

摘要

We prepared nanometer-sized nickel oxide by hydrothermal decomposition. In this work, NiSO_4·6H_2O and Na_2CO_3 were used as raw materials to prepare the precursors. Nanometer-sized nickel oxide was obtained after calcining the precursors. The temperature of the calcination process affects the morphology and size of the nanometer-sized nickel oxide. The precursors and products were analyzed by TG, XRD and SEM. Sheet nanometer-sized nickel oxide was obtained and characterized by its high purity, smooth surface, regular hexagon shape, average size of 500 nm and 30-60 nm thickness. The results indicate that the NiO particles become open pore structures at a calcination temperature above 500°C.