Abstract
Using multi-walled carbon nanotube (CNT) as an one-dimensional support, we have succeeded in uniformly anchoring of TiO2 and Fe nanoparticles at its surface. The as-prepared Fe–CNT/TiO2 composite photocatalysts have been investigated by degrading methylene blue (MB) under UV and differently intensified visible light irradiation. The ability of CNT to store and shuttle electrons, and Fe nanoparticles demonstrate its capability to serve as a yield and transfer electrons on demand to separate h + /e − pairs. Moreover, the MB photodegradation increase with an increase of visible light intensity can be ascribed to the enhancement MB cationic radical. In addition, chemical oxygen demand (COD) of piggery waste and reduction efficiency of Cr (IV) was done at regular intervals, which gave a good idea about mineralization of wastewater.
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Acknowledgements
This work was financially supported by the Natural Science Foundation of China (No. 21171004) and the Natural Science Foundation of Anhui Province Education Department (KJ2011A064, KJ2011A070).
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LI, Z., LIU, J., ZHANG, FJ. et al. UV and visible light photodegradation effect on Fe–CNT/TiO2 composite catalysts. Bull Mater Sci 36, 293–299 (2013). https://doi.org/10.1007/s12034-013-0456-1
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DOI: https://doi.org/10.1007/s12034-013-0456-1