The Morphology and Phases of Ni-Se Powders Prepared by Hydrothermal Method
Ni-Se powders synthesized by hydrothermal co-reduction method from NiCl2.6H2O and SeO2 at 95～220 °C. The phases and morphology of the products were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM) respectively. Experimental results show that, Ni0.85Se can be synthesized at 95～220 °C while noticeable impurities appeared at lower reaction temperatures. The products with single-phase Ni0.85Se obtained at 200 and 220 °C show hollow sphere structures with diameters of about 150 ~ 700 nm, which have complete and regular shape but no holes.
K. G. Liu et al., "The Morphology and Phases of Ni-Se Powders Prepared by Hydrothermal Method", Applied Mechanics and Materials, Vols. 29-32, pp. 1820-1823, 2010