Hierarchical Ag/Ag2S/CuS Ternary Heterostructure Composite as an Efficient Visible-Light Photocatalyst

被引：25
|
作者：
Shi, Yunhan [2 ]
Chen, Yajie [1 ]
Tian, Guohui [1 ,2 ]
Wang, Liyang [1 ]
Xiao, Yuting [1 ]
Fu, Honggang [1 ]
机构：
[1] Heilongjiang Univ, Minist Educ Peoples Republ China, Key Lab Funct Inorgan Mat Chem, Harbin 150080, Peoples R China
[2] Heilongjiang Univ, Sch Chem & Mat Sci, Coll Heilongjiang Prov, Key Lab Chem Engn Proc & Technol High Efficiency, Harbin 150080, Peoples R China
来源：
CHEMCATCHEM | 2015年 / 7卷 / 11期
基金：
黑龙江省自然科学基金; 中国国家自然科学基金;
关键词：
copper; environmental chemistry; ion exchange; photochemistry; silver; HYBRID NANOSTRUCTURES; CUS;
D O I：
10.1002/cctc.201500121
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：1684 / 1690
页数：7
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