Preparation of bismuth oxide/titania composite particles and their
photocatalytic activity to degradation of 4-chlorophenol
photocatalytic activity to degradation of 4-chlorophenol
(1. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control，College of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China;
2. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,
Hohai University, Nanjing 210098, China
3. State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China)
2. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,
Hohai University, Nanjing 210098, China
3. State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China)
Abstract: Bismuth oxide/titania, one interfacial composite semiconductor with high photocatalytic activity under solar light, was prepared at low temperature. The structure was characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), brunauer-emmett-teller (BET), X-ray photoelectron spectroscopy (XPS) and diffuse reflection spectra (DRS). The results indicate that deposited titania nanoparticles on bismuth oxide surface have micro-nano structure, and this composite material exhibits porosity and increased surface hydroxyl groups. Furthermore, the as-prepared photocatalyst shows higher photocatalytic activity to the degradation of 4-chlorophenol than pure titania or P25 under sunlight.
Key words: bismuth oxide; titania; photocatalysis; 4-chlorophenol