Visible Light Photodegradation of Azo Dye by Cu/TiO2

Cu/TiO2 photocatalysts with different metal loading were prepared via modified deposition-precipitation method with the intention to reduce the band gap for Orange II degradation and mineralization under visible light radiation. The photocatalysts were characterized using thermal gravimetric analysis, powder X-ray diffraction, diffuse reflectance UV-Visible spectroscopy and field-emission scanning electron microscopy. 10 wt% photocatalysts showed the best performance compared to the bare TiO2.