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Photocatalytic activity of vanadium-doped titania-activated carbon composite film under visible light |
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| Authors: | Jingjing Xu Yanhui Ao Mindong Chen Chunwei Yuan |
| Affiliation: | a College of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China b College of Environmental Science and Engineering, Hohai University, Nanjing 210092, China c State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China |
| Abstract: | A V-doped titania-activated carbon composite film was prepared by a modified sol-gel method under mild condition. X-ray diffraction analysis revealed that the titania was a pure anatase phase. From scanning electron microscopy and N2 adsorption-desorption measurements, we found that the composite film was porous since it formed a micro-nano structure. The photocatalytic activity of such film was evaluated through degradation of azo-dye Reactive Brilliant Red under visible light, and was compared to commercially available TiO2, pure titania and vanadium-doped titania films. Results showed that the photocatalytic activity was enhanced a lot. It was due to expansion of the absorption edge by vanadium doping, and the synergistic effect of activated carbon with titania. Furthermore, the hydrophilic property of the as-prepared composite film was superior to other samples. |
| Keywords: | Vanadium Titanium dioxide Photocatalysis Activated carbon Hydrophilicity Doping X-ray diffraction Scanning electron microscopy |
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