Abstract
Semiconductor photocatalysis technology is a promising method to solve the antibiotics pollution in water. Herein, a series of Sn-doped In2.77S4 (Sn-In2.77S4) hybrid photocatalysts for tetracycline degradation have been fabricated via a one-step hydrothermal process. The analytic results exhibit that doping Sn can improve the photocatalytic performance of In2.77S4 nanosheets under the visible light illumination and the doping amount obviously affects the photocatalytic performance of the samples. When the theoretical molar ratio of Sn4+ to In3+ is 0.04:1 (4%), the photocatalytic efficiency of the Sn-In2.77S4 photocatalyst exhibits the highest of 87.4% in comparison with 39.2% of pure In2.77S4 in 20 min. Moreover, its band gap energy has been reduced to 1.56 eV from 1.75 eV and the light absorption range has been broadened. The transfer rate and separation efficiency of photo-generated electron and hole pairs of the samples have also been enhanced. In addition, the holes play a leading role in the photocatalytic degradation process.
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Acknowledgements
This work was funded by the Natural Science Foundation of Hebei Province, China (Nos. E2019210251 and B2019210331), the Innovation Ability Improvement Project of Hebei Province, China (No. 20543601D), and the Ministry of Education “Chun Hui Plan” Cooperative Research Project, China.
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Wang, H., Zhang, CY., Chang, TL. et al. Preparation and characterization of Sn-doped In2.77S4 nanosheets as a visible-light-induced photocatalyst for tetracycline degradation. J Mater Sci: Mater Electron 32, 2822–2831 (2021). https://doi.org/10.1007/s10854-020-05035-6
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DOI: https://doi.org/10.1007/s10854-020-05035-6