Adsorption and photocatalytic performance of cuprous oxide/titania composite in the degradation of acid red B

作者：Fei Xuening^*; Li Fangdan; Cao Lingyun; Jia Guozhi; Zhang Ming

来源：Materials Science in Semiconductor Processing, 2015, 33: 9-15.

DOI：10.1016/j.mssp.2015.01.022

• Cu2O/TiO2 composite
• Adsorption ability
• Photocatalytic activity
• Photocorrosion

Cuprous oxide/titania (Cu2O/TiO2) composites were successfully prepared by the in-situ synthesis method using TiO2 and CuSO4 as precursors. The obtained catalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and UV-vis diffuse reflectance spectra. The results showed that the particles size gradually increased with the mass ratio of Cu2O, and an obvious p-n heterojunction was formed between Cu2O and TiO2. In addition, the adsorption and photocatalytic performance of Cu2O/TiO2 composite were evaluated by decolorization experiment of acid red B aqueous solution under sunlight. The results showed that Cu2O/TiO2 composite can effectively adsorb the acid red B through electrostatic attraction, and the 30% Cu2O/TiO2 with largest specific surface area had the best adsorption ability. At the same time, 30% Cu2O/TiO2 composite showed the best photocatalytic activity under sunlight and the less photo-corrosion.

• 出版日期2015-5
• 单位天津大学