Enhanced visible light photocatalytic activity of QDS modified Bi2WO6 nanostructures
Enhanced visible light photocatalytic activity of QDS modified Bi2WO6 nanostructures
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DOI：
10.1016/j.catcom.2010.05.010
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发表时间：
2010-07
影响因子：
3.7
通讯作者：
Z. Cui;D. Zeng;T. Tang;Jun Liu;C. Xie
中科院分区：
文献类型：
--
作者：
Z. Cui;D. Zeng;T. Tang;Jun Liu;C. Xie
通过简便的溶剂热法成功制备了 QDS 分散在单晶纳米片上的 Bi2WO6(BWO) 纳米结构。该产品具有60m2/g的大比表面积，表现出优异的可见光吸收性能，蓝移范围为2.54eV至2.75eV。样品的光催化效率是纳米颗粒组装的BWO纳米结构的六倍，是纳米板组装的BWO纳米结构的三倍。讨论了QDS修饰的BWO纳米结构上降解染料的光催化机理，揭示了QDS在光生电子和空穴的产生、迁移和消耗中的重要作用。
Bi2WO6(BWO) nanostructures with QDS dispersed on single crystalline nanosheets were successfully prepared by a facile solvothermal method. The product possessed large surface area of 60m2/g and exhibited excellent visible light absorption with a blue shift from 2.54eV to 2.75eV. The photocatalytic efficiency of the sample was six times that of nanoparticles assembled BWO nanostructures and three times that of nanoplates assembled BWO nanostructures. The photocatalytic mechanism for degradation of dyes over QDS modified BWO nanostructures was discussed, which revealed the important role of QDS in the generation, migration and consumption of the photogenerated electrons and holes.