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Issue 35, 2013
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Near-infrared photocatalysis of β-NaYF4:Yb3+,Tm3+@ZnO composites

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A novel near-infrared (NIR)-responsive photocatalyst, β-NaYF4:Yb3+,Tm3+@ZnO composites, was prepared by a two-step high temperature thermolysis method. In the NIR-responsive photocatalysis, β-NaYF4:Yb,Tm served as a NIR-to-UV upconverter and provided “UV light” or “necessary energy” to the ZnO catalyst. The energy transfer in the composites and the mixtures of β-NaYF4:Yb,Tm and ZnO was studied by using steady-state and dynamic fluorescence spectroscopy. The NIR photocatalytic activities were investigated by the decomposition of Rhodamine B. It was found that the energy transfer processes dominated the overall photocatalytic activities, and the generation of hydroxyl radicals was the origin of organic pollutant decomposition under NIR irradiation.

Graphical abstract: Near-infrared photocatalysis of β-NaYF4:Yb3+,Tm3+@ZnO composites

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The article was received on 29 Jan 2013, accepted on 12 Jun 2013 and first published on 13 Jun 2013

Article type: Paper
DOI: 10.1039/C3CP52248B
Phys. Chem. Chem. Phys., 2013,15, 14681-14688

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    Near-infrared photocatalysis of β-NaYF4:Yb3+,Tm3+@ZnO composites

    X. Guo, W. Song, C. Chen, W. Di and W. Qin, Phys. Chem. Chem. Phys., 2013, 15, 14681
    DOI: 10.1039/C3CP52248B

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