Journal
RSC ADVANCES
Volume 3, Issue 44, Pages 22269-22279Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra42712a
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Funding
- National Nature Science Foundation of China [21007021, 21177050, 21076099, 21175061]
- Postdoctoral Foundation of China [2012M521014]
- Society Development Fund of Zhenjiang [SH2011011, SH2012020]
- Foundation of Jiangsu University [04JDG048, 08JDG043]
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Cerium dioxide/graphitic carbon nitride (CeO2/g-C3N4) visible-light-induced photocatalysts were successfully prepared by a simple mixing-calcination technique. The CeO2/g-C3N4 nanocomposites were characterized by thermogravimetric analysis (TG), powder X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis diffuse reflection spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) and the photocurrent-time (PT) measurements. Photocatalytic activities of the prepared samples were examined by studying the degradation of methylene blue (MB) and 4-chlorophenol (4-CP) under visible light irradiation (>400 nm). The CeO2/g-C3N4 composites showed higher photocatalytic activity than that of CeO2 and g-C3N4. The optimum photoactivity of CeO2/g-C3N4 (13.0%) exhibited the highest photocatalytic activity in pollutant treatment and an enhanced photocurrent under visible light. These enhanced activities could be attributed to the synergetic effect between g-C3N4 and CeO2. The increasing photocatalytic activity mechanism was also discussed.
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