The Research On The Producing Technology Of Cuprous Oxide

Cuprous oxides (Cu2O) of different shapes have been synthesized by liquid phase reduction and hydrothemal method, respectively. By precisely controlling the preparation condition, we can obtain cubic, octahedral, spherical, flower-like nanoparticles. All of the samples were characterized by X-ray powder diffractometer (XRD), scanning electron microscopy (SEM). The results indicate that surfactants and sodium hydroxide were indispensable on the control of the particle size and morphology of crystal. It was also found that Cu2O was easily reducted to copper by hydrothemal method using glycine as reductant.A novel Cu2O/sepiolite photocatalyst is developed and the decoloration rate of methyl orange is86%for Cu2O/sepiolite photocatalyst with the optimum Cu2O content33.3%, which is higher28%than that(58%) of purity Cu2O catalyst. The structure, morphology, optical property and catalytic performance of the catalyst were characterized by X-ray diffraction spectroscopy (XRD), scanning electron microscopy (SEM), ultraviolet visible spectroscopy (UV-vis), and spectrophotometer. The sizes of Cu2O with octahedral structure decreased with using both sepiolite as support and ammonia water as etch agent, the maximum absorption had a red shift and the forbidden band gap increased. The results of IR indicated that Cu2O attached to the sepiolite was more stable than pure Cu2O. To sum up, the sepiolite plays a disperse and stable role in of the novel Cu2O/sepiolite photocatalyst, which help to improve the catalytic activity of Cu2O.