Effects of solvents on the synthesis and infrared radiation emissivity of CuFe2O4 spinels

CuFe2O4 samples have been successfully prepared by hydrothermal/solvothermal method under various solvents. The structural, morphological, optical and infrared radiation properties have been systemically investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-Vis-NIR absorption spectroscopy, Fourier transform infrared (FT-IR), Raman and IR-2 dual band emissivity measurement instruments. XRD analysis indicates the solvents have no effects on the crystal phase of CuFe2O4 samples but affects their purity. The SEM and TEM measurements reveal the microstructure of CuFe2O4 samples. UV-Vis-NIR absorption spectroscopy shows the influences of solvents on their optical absorption properties and band gaps. The excellent infrared radiation properties make them as the indispensable candidates in infrared heating, infrared coating and drying fields.