Abstract
The electrochemical behavior of copper electrode in sodium tungstate (Na2WO4) solution has been studied through cyclic voltammetry (CV). CV results informed that CuWO4 was formed in kinds of electrochemical processes followed with chemical reaction. A cationic exchange membrane-assisted electrolysis method was developed to synthesize optical nanoparticle CuWO4 for the first time. Anode chamber collected CuWO4 was calcined at 500 °C based on the thermogravimetry test result. The X-ray diffraction (XRD) pattern of calcined CuWO4 showed no impurities. Microstructure of CuWO4 was characterized by transmission electron microscope (TEM) and high-resolution transmission electron microscope (HRTEM). The fourier transform infrared spectroscopy (FTIR) of the sample further confirmed the formation of pure CuWO4 nanoparticle. Furthermore, the optical property of the nanomaterial was studied by ultraviolet visible diffuse reflectance spectrophotometer (UV–vis) and photoluminescence (PL).
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