Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 164, Issue -, Pages 297-304Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2014.09.046
Keywords
Photocatalysis; Ternary metal molybdate; Plasmonic photocatalysts; Tetracycline degradation
Funding
- National Natural Science Foundation of China [21276116, 21477050, 21301076, 21303074, 21201085]
- Excellent Youth Foundation of Jiangsu Scientific Committee [BK20140011]
- Open Project of State Key Laboratory of Rare Earth Resource Utilizations [RERU2014010]
- Program for New Century Excellent Talents in University [NCET-13-0835]
- Henry Fok Education Foundation [141068]
- Six Talents Peak Project in Jiangsu Province [XCL-025]
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Single-crystalline Agin(MoO4)(2) nanosheets have been successfully fabricated by facile hydrothermal method without any surfactants. Subsequently, Ag/AgBr-grafted Agin(MoO4)(2) nanosheets were synthesized by the in situ photoreduction of AgBr/Agin(MoO4)(2) composites prepared by a deposition-precipitation method. Under visible light irradiation. The Ag/AgBr/AgIn(MoO4)(2) composites exhibit a strong absorbance in the visible region because of the surface plasmon resonance absorption of Ag nanocrystals. Compared with bare AgIn(MoO4)(2) nanosheets, Ag/AgBr nanoparticles and Ag/AgIn(MoO4)(2) composites, a dramatic enhancement in the degradation rate of tetracycline (TC) is observed over the Ag/AgBr/AgIn(MoO4)(2) composites. The immense enhancement of the photocatalytic activity is attributed to the extended absorption in the visible-light region, effective charge separation, and synergistic enhancement induced by surface plasmon resonance (SPR) in the heterostructured Ag/AgBr/AgIn(MoO4)(2).This study provides new insight into the fabrication of highly efficient and stable ternary metal molybdate based plasmonic photocatalysts and facilitates their practical application to solve environmental issues. The mechanism for the photodegradation of TC over Ag/AgBr/Agin(MoO4)(2) is discussed in detail. (C) 2014 Elsevier B.V. All rights reserved.
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