Abstract
Carbon tetrachloride (CCl4) is a kind of toxic and persistent groundwater contaminant. Considering keeping drinking water safe, a novel kind of N-doped graphene (NGS)-P25 TiO2 photocatalyst was prepared by a facile one-step hydrothermal method for the removal of CCl4 from contaminated water. Simultaneously, nitrogen-doping and the reduction of graphene oxide, and loading of P25 were finished during the same process. The photocatalytic efficiency of resulted NGS-P25 nanoparticles was studied for the degradation of CCl4. The results indicated that NGS-P25 exhibited the highest photocatalytic activity under UV light irradiation, outperforming graphene-P25, bare P25 or NGS. The effects of NGS-P25 dosage, irradiation time, CCl4 concentration and pH on CCl4 photocatalytic degradation efficiency were discussed in detail. Accordingly, the optimum experimental conditions were obtained. Moreover, the high performance photocatalyst of NGS-P25 can be extended to environmental pollution control and remediation towards various pollutants.
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Acknowledgments
The authors are grateful for the referee’s helpful comments on the manuscript. This work is financially supported by Postdoctoral Science Foundation of China (No. 2012M521295) and the major projects of the National Science and Technology, technology research and comprehensive demonstration of the lower reaches of the Yellow River area drinking water safety (2008ZX07422).
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Yao, Z., Wang, M., Sun, S. et al. High Performance Photocatalysts Based on N-doped Graphene-P25 for Photocatalytic Reduction of Carbon Tetrachloride. J Inorg Organomet Polym 24, 315–320 (2014). https://doi.org/10.1007/s10904-013-9960-4
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DOI: https://doi.org/10.1007/s10904-013-9960-4