Journal
CATALYSIS COMMUNICATIONS
Volume 46, Issue -, Pages 128-132Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2013.12.004
Keywords
Photocatalysis; Composites; Cu2S/K4Nb6O17; Polyol; Hydrogen evolution
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Funding
- National Natural Science Foundations of China [51172063, 51202056, 51372068]
- Natural Science Foundation of Hebei Province, China [E2012401070]
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Cu2S-loaded K4Nb6O17 photocatalysts (designated Cu2S/K4Nb6O17) were prepared via a polyol method. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), X-ray fluorescence spectrometry (XRF), N-2 sorption, and ultraviolet-visible diffuse reflectance spectra (UV-Vis DRS). The Cu2S particles were well-dispersed on the surface of K4Nb6O17 and possessed a uniform size distribution around 10 nm. Cu2S (20 wt.%)/K4Nb6O17 possessed the highest photocatalytic activity for hydrogen evolution, producing 2.45 mmol g(-1) h(-1) under visible light irradiation. The mechanism of separation of the photogenerated electrons and holes was discussed. (C) 2013 Elsevier B.V. All tights reserved.
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