摘要
Fly ash cenospheres （FACs） coated with nitrogen-doped Ti02 （N-TiO2） composites were prepared by the sol-gel method for use as photocatalysts. The photocatalytic activity and kinetics of the composites produced at different calcination temperatures and with different nitrogen doping contents were studied under visible light irradiation by monitoring the environmental degradation of methylene blue （MB）. The MB degradation ratio of N-TiO2/FAC （25%, 450 ~C） was 10% higher than that of N-TiO2 and 40% higher than that of TiO2/FAC. These N-TJO2/FAC composites floated in water and could be recovered after the photocatalytic reaction by phase separation.
Fly ash cenospheres （FACs） coated with nitrogen-doped Ti02 （N-TiO2） composites were prepared by the sol-gel method for use as photocatalysts. The photocatalytic activity and kinetics of the composites produced at different calcination temperatures and with different nitrogen doping contents were studied under visible light irradiation by monitoring the environmental degradation of methylene blue （MB）. The MB degradation ratio of N-TiO2/FAC （25%, 450 ~C） was 10% higher than that of N-TiO2 and 40% higher than that of TiO2/FAC. These N-TJO2/FAC composites floated in water and could be recovered after the photocatalytic reaction by phase separation.
基金
financial supports from the Foundation of State Key Laboratory of Pollution Control and Resource Reuse of China
the National Natural Science Foundation of China (No. 51008154)
the Jiangsu Natural Science Foundation (No. SBK201022682)
the Research Fund for the Doctoral Program of Higher Education of China (No. 20090091120007)
the Fundamental Research Funds for the Central University (No. 1112021101)
the Jiangsu Cultivate the Innovative Engineering for Graduate Student (No. CXZZ12_0063)
the China Postdoctoral Science Foundation funded project (No. 2012M511254)
the Scientifc Research Foundation of Graduate School of Nanjing University (No. 2012CL10)
