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Ag/AgBr‐Grafted Graphite‐like Carbon Nitride with Enhanced Plasmonic Photocatalytic Activity under Visible Light
Author(s) -
Xu YangSen,
Zhang WeiDe
Publication year - 2013
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201300144
Subject(s) - photocatalysis , materials science , visible spectrum , rhodamine b , surface plasmon resonance , carbon nitride , absorption (acoustics) , photochemistry , graphite , graphitic carbon nitride , nanoparticle , absorbance , ternary operation , chemical engineering , nanotechnology , optoelectronics , catalysis , chemistry , organic chemistry , composite material , chromatography , computer science , engineering , programming language
Ag/AgBr‐grafted graphite‐like carbon nitride (g‐C 3 N 4 ) is fabricated by the in situ photoreduction of AgBr/g‐C 3 N 4 hybrids prepared by a deposition–precipitation method. The Ag/AgBr/g‐C 3 N 4 hybrids exhibit a strong absorbance in the visible and near‐IR region because of the surface plasmon resonance absorption of Ag nanocrystals. Compared with bare g‐C 3 N 4 and Ag/AgBr nanoparticles, a 28‐fold and six‐fold enhancement in the degradation rate of rhodamine B is observed over Ag/AgBr/g‐C 3 N 4 hybrids under visible‐light irradiation, respectively. The immense enhancement of the photocatalytic activity is attributed to the extended absorption in the visible‐light region, effective charge separation, and synergistic enhancement in the ternary Ag/AgBr/g‐C 3 N 4 system. Moreover, the composite can be reclaimed easily by sedimentation without any decrease of its photocatalytic activity. This study provides new insight into the fabrication of highly efficient and stable g‐C 3 N 4 ‐based plasmonic photocatalysts and facilitates their practical application to solve environmental issues.