Construction of Highly Active Zn 3 In 2 S 6 (110)/g-C 3 N 4 System by Low Temperature Solvothermal for Efficient Degradation of Tetracycline under Visible Light.
International journal of molecular sciences(2022)
摘要
Herein, ZnInS photocatalyst with (110) exposed facet was prepared by low temperature solvothermal method. On this basis, a highly efficient binary ZnInS/g-CN was obtained by low temperature solvothermal method and applied to the degradation of tetracycline (TC). The samples of the preparation were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope, UV-vis diffuse reflection spectroscopy, and photoluminescence spectroscopy. Furthermore, the degradation performance of photocatalysts on TC was investigated under different experimental conditions. Finally, the mechanism of ZnInS/g-CN composite material degrading TC is discussed. The results show that ZnInS and ZnInS/g-CN photocatalysts with excellent performance could be successfully prepared at lower temperature. The ZnInS/g-CN heterojunction photocatalyst could significantly improve the photocatalytic activity compared with g-CN. After 150 min of illumination, the efficiency of 80%ZnInS/g-CN to degrade TC was 1.35 times that of g-CN. The improvement of photocatalytic activity was due to the formation of ZnInS/g-CN heterojunction, which promoted the transfer of photogenerated electron-holes. The cycle experiment test confirmed that ZnInS/g-CN composite material had excellent stability. The free radical capture experiment showed that ·O was the primary active material. This study provides a new strategy for the preparation of photocatalysts with excellent performance at low temperature.
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关键词
Zn3In2S6/g-C3N4,low temperature,photocatalytic,tetracycline
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