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An All‐Solid‐State Z‐Scheme g‐C 3 N 4 /Ag/Ag 3 VO 4 Photocatalyst with Enhanced Visible‐Light Photocatalytic Performance
Author(s) -
Wu Jiajia,
Shen Xiaoping,
Miao Xuli,
Ji Zhenyuan,
Wang Jiheng,
Wang Ting,
Liu Miaomiao
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201700215
Subject(s) - photocatalysis , graphitic carbon nitride , rhodamine b , chemistry , nanoparticle , degradation (telecommunications) , catalysis , nuclear chemistry , photochemistry , nanotechnology , materials science , organic chemistry , telecommunications , computer science
An all‐solid‐state Z‐scheme g‐C 3 N 4 /Ag/Ag 3 VO 4 photocatalyst was synthesized by a facile two‐step reaction route, during which Ag nanoparticles were first deposited on graphitic carbon nitride (g‐C 3 N 4 ) nanosheets by photochemical reduction of Ag + , and then the remnant Ag + ions reacted with VO 4 3– to form Ag 3 VO 4 nanoparticles on the surface of g‐C 3 N 4 /Ag. The photocatalytic activity of the as‐synthesized g‐C 3 N 4 /Ag/Ag 3 VO 4 photocatalyst for the degradation of rhodamine B was remarkably enhanced relative to that of g‐C 3 N 4 and Ag 3 VO 4 , as well as that of g‐C 3 N 4 /Ag and g‐C 3 N 4 /Ag 3 VO 4 . The enhanced photocatalytic performance of g‐C 3 N 4 /Ag/Ag 3 VO 4 was attributed to the formation of an all‐solid‐state Z‐scheme system, in which the Ag nanoparticles serve as electron‐shuttle mediators in constructing the Z‐scheme and thus prolong the lifetime of electrons and holes photogenerated by g‐C 3 N 4 and Ag 3 VO 4 , respectively. The excellent photocatalytic performance of g‐C 3 N 4 /Ag/Ag 3 VO 4 suggests that this material would be promising for use in the degradation of organic pollutants and provides a new clue for the development of novel Z‐scheme photocatalytic materials.