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The complex fluoride,KNiF3,with perovskite structure was synthesized by refluxing KF and Ni(NO3)2·6H2O in ethanediol.The samples were characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS),and ultraviolet-visible diffuse reflectance spectroscopy(UV-Vis DRS).The results indicate that the mean diameter of KNiF3 particles is about 30―60 nm and the oxygen content in the samples is≤5%.The prepared KNiF3 shows obvious absorption peaks at 400―830 nm.
The complex fluoride, KNiF3, with perovskite structure was synthesized by refluxing KF and Ni (NO3) 2 .6H2O in ethanediol.The samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS). The results indicate that the mean diameter of KNiF3 particles is about 30-60 nm and the oxygen content in the samples is < obvious absorption peaks at 400-830 nm.