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Hierarchical Ag/Ag 2 S/CuS Ternary Heterostructure Composite as an Efficient Visible‐Light Photocatalyst
Author(s) -
Shi Yunhan,
Chen Yajie,
Tian Guohui,
Wang Liyang,
Xiao Yuting,
Fu Honggang
Publication year - 2015
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.201500121
Subject(s) - ternary operation , composite number , heterojunction , materials science , photocatalysis , nanoparticle , chemical engineering , visible spectrum , ion exchange , nanotechnology , nuclear chemistry , catalysis , chemistry , ion , composite material , optoelectronics , organic chemistry , computer science , engineering , programming language
Abstract A hierarchical Ag/Ag 2 S/CuS ternary heterostructure composite has been obtained through cation exchange between as‐prepared CuS nanoflowers and AgNO 3 (synthesized under solvothermal conditions) and subsequent in situ UV‐light reduction. The prepared CuS nanoflowers not only provide reactive sites for in situ ion exchange with Ag + but also perform as clapboards to prevent the excess aggregation of Ag 2 S nanoparticles. After exposure to UV light, a uniform Ag/Ag 2 S/CuS ternary heterostructure composite was obtained. In the composite, both Ag and Ag 2 S are grown on the surface of CuS nanoflowers. The prepared ternary heterostructure composite exhibited a significant ability for the elimination of some hazardous pollutants under visible‐light irradiation, which is much higher than that of either CuS or Ag 2 S/CuS. Moreover, the resultant ternary composite possesses excellent stability.