Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 218, Issue -, Pages 51-59Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2017.03.085
Keywords
Cubic CeO2 {100}; g-C3N4; Photocatalytic hydrogen evolution; Interfacial interaction
Funding
- Natural Science Foundation of Jiangsu Province [BK20161392]
- National Natural Science Foundation of China [21670182, 21573105, 21607122]
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In this work, CeO2 nanocubes hybridized g-C3N4 composites had been facilely synthesized to investigate the interfacial effects on photocatalytic water splitting. The c-CeO2/g-C3N4 composites exhibited the superior photocatalytic hydrogen evolution under visible light irradiation. The optimal c-CeO2 loading content was 5 wt%, with the H-2 evolution of 4300 mu molg(-1) for 5 h illumination, higher than that of pristine CeO2, g-C3N4 and irregular CeO2 nanoparticles/g-C3N4. Moreover, UV-vis DRS, PL spectra and photoelectrochemical measurements demonstrated that 5 wt% c-CeO2/g-C3N4 composite possessed more visible light adsorption and faster charge transfer, which was attributed to the stronger interfacial effects through the presence of the hydrogen bond and p-err hybrid between c-CeO2 {100} and g-C3N4, revealed by the FT-IR and XPS results. The work suggested that engineering the structures of the CeO2 and g-C3N4 interface could be an effective strategy to obtain excellent photocatalysts. (C) 2017 Elsevier B.V. All rights reserved.
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