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An efficient near-infrared-responsive photocatalyst of flower-like Gd3+-doped WS2

  • Materials (Organic, Inorganic, Electronic, Thin Films)
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Abstract

To improve the utilization efficiency of sunlight, near-infrared (NIR)-responsive Gd3+-doped WS2 was prepared by a microwave-assisted solvothermal method. The microwave-assisted method required 1 h to synthesize the particles. To examine the activity of the photocatalyst under only NIR laser irradiation, its photocatalytic activities were evaluated by monitoring the degradation of Rhodamine B under 808 nm NIR laser irradiation. The NIR-responsive photocatalyst can also be used in the UV and visible light regions having shorter wavelengths than the NIR region. Photoactivity under a broader range of wavelengths can lead to more efficient photocatalytic reactions. Since NIR radiation has high permeability, the IR-photocatalytic reaction can be successfully carried out even on cloudy days or in damp environments. To prove this, the NIR laser was passed through a milk layer, following which a photocatalytic reaction experiment was conducted.

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Acknowledgements

This work was conducted during the sabbatical year of Kwangwoon University in 2019 with research fund of the National Research Foundation of Korea (NRF-2017R1A2B4001829).

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Correspondence to Younghun Kim.

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Kim, W., Kim, Y. An efficient near-infrared-responsive photocatalyst of flower-like Gd3+-doped WS2. Korean J. Chem. Eng. 36, 816–821 (2019). https://doi.org/10.1007/s11814-019-0264-4

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  • DOI: https://doi.org/10.1007/s11814-019-0264-4

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