Journal
NEW JOURNAL OF CHEMISTRY
Volume 43, Issue 28, Pages 11342-11347Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nj01785b
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Funding
- National Natural Science Foundation of China [51572092]
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Nanostructured semiconductor photocatalysts with high specific surface areas and unique structures are expected with high performance for the photo-degradation of organic pollutants. In this work, novel pine-branch-like ternary CuO/CuS/ZnO heterostructure catalysts have been designed and successfully synthesized on a Cu foam substrate. Effective electron-hole separation, improved visible light utilization and efficient light harvesting by novel pine-branch-like heterostructures have been realized. The photocatalytic rate constant of a pine-branch-like CuO/CuS/ZnO heterostructure is 0.0156 min(-1), which is 2 times that of CuO/CuS (0.0078 min(-1)) and 4.6 times that of CuO nanowires (0.0034 min(-1)) in the degradation of RhB solution. The enhanced catalytic ability of the CuO/CuS/ZnO heterostructure is attributed to the unique heterostructure, which effectively enhances the absorption of sunlight and reduces the charge-carrier recombination. The stability and high efficiency of the novel cost-effective, non-toxic and easily-recyclable catalytic system can be extended to the photocatalytic field and solar water splitting for hydrogen generation.
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