Journal
CHEMCATCHEM
Volume 7, Issue 11, Pages 1684-1690Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201500121
Keywords
copper; environmental chemistry; ion exchange; photochemistry; silver
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Funding
- National Natural Science Foundation of China [51272070, 21371053, 21376065]
- Natural Science Foundation of Heilongjiang Province of China [E201455]
- Postdoctoral science-research developmental foundation of Heilongjiang province [LBH-Q13136]
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A hierarchical Ag/Ag2S/CuS ternary heterostructure composite has been obtained through cation exchange between as-prepared CuS nanoflowers and AgNO3 (synthesized under solvothermal conditions) and subsequent insitu UV-light reduction. The prepared CuS nanoflowers not only provide reactive sites for insitu ion exchange with Ag+ but also perform as clapboards to prevent the excess aggregation of Ag2S nanoparticles. After exposure to UV light, a uniform Ag/Ag2S/CuS ternary heterostructure composite was obtained. In the composite, both Ag and Ag2S 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 Ag2S/CuS. Moreover, the resultant ternary composite possesses excellent stability.
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