Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 183, Issue -, Pages 133-141Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2015.10.035
Keywords
Photocatalysis; Ag3PO4@g-C3N4; Core@shell; Degradation; Stability
Funding
- National Natural Science Foundation of China [51372068]
- Hebei Natural Science Funds for Distinguished Young Scholar [B2014209304]
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Ag3PO4@g-C3N4 core@shell composites were prepared via an ultrasonication/chemisorption method. The degradation of methylene blue (MB) over Ag3PO4@g-C3N4 composites was investigated to evaluate their photocatalytic performance. The Ag3PO4@g-C3N4 sample presented the best photocatalytic activity, degrading 97% MB after irradiation for 30 min. Superior stability was also observed in the cyclic runs. The composite has excellent photocatalytic activity and photo-stability and the optimal content of g-C3N4 in the composites is 7.0 wt.%. The efficient photo-generated charge separation originated from a strong interaction in the intimately contact interface, which was confirmed by the results of photocurrent and EIS measurements. Based on the experimental results, a photocatalytic mechanism for organics degradation over Ag3PO4@g-C3N4 photocatalysts was proposed. (C) 2015 Elsevier B.V. All rights reserved.
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