Open AccessEnhanced Visible-Light-Induced Photocatalytic Performance of g-C3N4/ZnS/CuS Ternary Composite for Environmental Remediation
Author(s) -
Ying Si,
Xiaoxian Zhang,
Ping Li,
Shuwang Duo
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/678/1/012129
Subject(s) - photocatalysis , rhodamine b , ternary operation , graphitic carbon nitride , materials science , hydrothermal circulation , nanocomposite , composite number , nuclear chemistry , chemical engineering , visible spectrum , catalysis , nanotechnology , chemistry , composite material , optoelectronics , organic chemistry , computer science , engineering , programming language
The inherent drawback of high photo-induced electron-hole pair recombination rate restricts the photocatalytic performances of graphitic carbon nitride (g-C 3 N 4 ).Here, in this work, g-C 3 N 4 /ZnS/CuS ternary nanocomposites with different CuS concentration were successfully fabricated by a hydrothermal process and subsequent followed by a cation exchange reaction. The as-synthesized samples were characterized by the techniques of XRD, SEM, DRS, FT-IR and PL. Characterization results show a much more efficient electron-hole pair separation rate of g-C 3 N 4 /ZnS/CuS, the g-C 3 N 4 /ZnS/CuS (8%) sample shows the best photocatalytic performance for degradation of Rhodamine B (RhB), which is about 1.6 times higher than that of g-C 3 N 4 /ZnS and 6.2 times higher than that of pure g-C 3 N 4 , respectively. The high photodegraded activity is attributed to the important role of ZnS and CuS acted as electron co-catalysts, which retard the fast recombination of photo-induced holes and electrons, resulting in higher photodegraded activity than pure g-C 3 N 4 .Our research work indicates that the heterostructured formation ofg-C 3 N 4 , ZnS and CuS is helpful for the fabrication of g-C 3 N 4- based photocatalysts with enhanced visible light photoactivity.