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Synthesis of the Ag/AgCl/g‐C 3 N 4 Composite with High Photocatalytic Activity under Visible Light Irradiation
Author(s) -
Yao Xiaxi,
Liu Xiaoheng,
Hu Xiuli
Publication year - 2014
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.201402487
Subject(s) - photocatalysis , composite number , materials science , visible spectrum , irradiation , chlorine , nanoparticle , chemical engineering , photochemistry , nuclear chemistry , composite material , nanotechnology , chemistry , catalysis , metallurgy , optoelectronics , organic chemistry , physics , nuclear physics , engineering
Abstract Novel Ag/AgCl/g‐C 3 N 4 composite photocatalysts were synthesized through precipitation in geothermal water at room temperature, in which geothermal water was used as the chlorine source. The results suggested that Ag/AgCl nanoparticles were deposited on the surface of g‐C 3 N 4 sheets with high dispersion and that Ag/AgCl/g‐C 3 N 4 composites show strong absorption in the visible light region. The 50 wt % Ag/AgCl/g‐C 3 N 4 composite demonstrated increased photocatalytic activity for the degradation of organic dyes under visible light irradiation than did pure g‐C 3 N 4 (one component), Ag/AgCl (two component), and the mixture of Ag/AgCl and g‐C 3 N 4 . The trapping experiments confirmed that holes and ⋅O 2 − were the main active species responsible for the photocatalytic process. Finally, a possible photocatalytic mechanism of the charge transfer in Ag/AgCl/g‐C 3 N 4 composites was proposed. This work could provide new insights into the application of cheap geothermal water resources and extend the design of new plasmon‐based photocatalysts.