期刊
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
卷 36, 期 1, 页码 17-23出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/bkcs.10001
关键词
g-C3N4; Ce doping; Photocatalysis; Visible light; Doping site
资金
- National Natural Science Foundation of China [21103077]
- Program for New Century Excellent Talents in University [NCET-11-1011]
- Natural Science Foundation of Liaoning Province [20092080]
- Natural Science Foundation of Liaoning Shihua University [2011XJJ-021]
Graphitic carbon nitride (g-C3N4) doped with the rare earth metal Ce was prepared by a simple method using melamine and Ce(SO4)(2)center dot 4H(2)O as precursors. X-ray diffraction (XRD), UV-vis spectroscopy, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), photoluminescence (PL) spectroscopy, and X-ray photoelectron spectroscopy (XPS) were used to characterize the prepared catalysts. The results indicate that the introduction of Ce inhibits the crystal growth of g-C3N4, decreases the bandgap energy, and increases the separation efficiency of photogenerated electrons and holes. The activities of Ce-doped g-C3N4 catalysts were tested in the photocatalytic degradation of rhodamine B (RhB) under visible light. The rate constant of Ce-doped g-C3N4 is 2.1 x that of neat g-C3N4. A possible mechanism is proposed.
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