Abstract
The Zn2+ doped In2.77S4 (Zn–In2.77S4) photocatalyst has been synthesized via a one-step hydrothermal method. The tetracycline was adopted to measure the photocatalytic performance of the as-fabricated Zn–In2.77S4 composites. The probable photocatalytic degradation mechanism of the as-prepared composites was also discussed. Experimental results reveal that doping Zn2+ into In2.77S4 can broaden the light absorption range and improve the recycle ability as well as the separation efficiency of photo-generated electron–hole pairs of pure In2.77S4. Moreover, as the doping amount of Zn2+ increased the photocatalytic efficiency of the as-obtained Zn–In2.77S4 composites appears the tendency of firstly increasing and then decreasing. When the molar ratio of Zn2+ to In3+ is 0.04:1 (4%), in 15 min, the photocatalytic efficiency of the as-developed Zn–In2.77S4 photocatalyst reaches to the maximum of 90.0%. It is higher than 31.8% of pure In2.77S4. Furthermore, superoxide radicals and holes play major roles in the process of photodegradation tetracycline. This research can supply a promising guide to solve antibiotics pollution in water under sunlight.
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This work was funded by the Natural Science Foundation of Hebei Province, China (Nos. E2019210251 and B2019210331).
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Li, H., Wu, XF., Zhang, CY. et al. Hydrothermal synthesis of Zn2+ doped In2.77S4 nanosheets as a visible-light photocatalyst for tetracycline degradation. Appl. Phys. A 125, 763 (2019). https://doi.org/10.1007/s00339-019-3049-z
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DOI: https://doi.org/10.1007/s00339-019-3049-z