Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 24, Pages 22116-22125Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am505528c
Keywords
plasmonic photocatalyst; Ag@AgCl/g-C3N4; heterostructures; ion exchange; visible light; photocatalysis
Funding
- National Natural Science Foundation of China [21272236, 21225730, 91326202]
- Ministry of Science and Technology of China [2011CB933700]
- Chinese National Fusion Project for ITER [2013GB110000]
- Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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A novel efficient Ag@AgCl/g-C3N4 plasmonic photocatalyst was synthesized by a rational in situ ion exchange approach between exfoliated g-C3N4 nanosheets with porous 2D morphology and AgNO3. The as-prepared Ag@AgCl-9/g-C3N4 plasmonic photocatalyst exhibited excellent photocatalytic performance under visible light irradiation for rhodamine B degradation with a rate constant of 0.1954 min(-1), which is similar to 41.6 and similar to 16.8 times higher than those of the g-C3N4 (similar to 0.0047 min(-1)) and Ag/AgCl (similar to 0.0116 min(-1)), respectively. The degradation of methylene blue, methyl orange, and colorless phenol further confirmed the broad spectrum photocatalytic degradation abilities of Ag@AgCl-9/g-C3N4. These results suggested that an integration of the synergetic effect of suitable size plasmonic Ag@AgCl and strong coupling effect between the Ag@AgCl nanoparticles and the exfoliated porous g-C3N4 nanosheets was superior for visible-light-responsive and fast separation of photogenerated electron-hole pairs, thus significantly improving the photocatalytic efficiency. This work may provide a novel concept for the rational design of stable and high performance g-C3N4-based plasmonic photocatalysts for unique photochemical reaction.
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