The CuBi2O4/TiO2 p-n heterojunction composites were obtained by in situ sol-gel coating process using prepared CuBi2O4 powders and titania colloid. The obtained CuBi2O4/TiO2 composites were characterized by XRD, SEM, BET and UV-vis diffuse reflectance spectroscopy. Their photocatalytic and adsorption activities were evaluated by degradations and adsorptions of methyl orange and congo red. Results showed that some compositions of prepared p-n heterojunction composites exhibited much higher photocatalytic activity and absorption performance than pure CuBi2O4 or pure TiO2, demonstrating that the formation of p-n heterojunction between the two materials plays an important role in improving photocatalytic activity and adsorption performance.
Xinjiang Univ, Key Lab Oil & Gas Fine Chem, Minist Educ & Xinjiang Uyghur Autonomous Reg, Urumqi 830046, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China
Zhang, Yun,Xie, Yahong,Li, Juan,et al. Photocatalytic activity and adsorption performance of p-CuBi2O4/n-TiO2 p-n heterojunction composites prepared by in situ sol-gel coating method[J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY,2014,71(1):38-42.