Cu2O/Cu photo-sensitizer catalyst with shell-core structure has been prepared by taking bronze powder as raw matrix via hydrothermal route. The results from Scan Electron Microscope (SEM) and Transmission Electron Microscope (TEM) indicated that the size of particles ranged from 4μm to 11μm, and the distribution of particle size was narrow. The results from X-ray Diffusion (XRD) indicated that the Cu2O in the particles was assigned to the isometric crystal phase. X-ray Florescence specera (XRF) verified that the molar ratio of copper to oxygen abided by stoichiometry. The Ultraviolet Visible Diffuse Reflectance Spectra (UV-Vis) showed that the absorption spectra of these photocatalysts centered at the visible band of 400～700nm. The Laser Raman Microscope indicated further that the compound on the surface of Cu2O/Cu particles belonged to the onefold cuprous oxide. In the presence of the prepared Cu2O/Cu particles, the degradation of 4BE aqueous exhibited higher efficiency. This performance could be attributed to the schottky barrier effect occured in Cu2O/Cu with shell-core structure.

Cu2O; hydrothermal method; photo-sensitizer; shell-core structure