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Preparation of g-C3N4/MoS2 Composite Material and Its Visible Light Catalytic Performance

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Abstract

The g-C3N4 nanosheet was prepared by calcination method, the MoS2 nanosheet was prepared by hydrothermal method. The g-C3N4/MoS2 composites were prepared by ultrasonic composite in anhydrous ethanol. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, ultraviolet–visible spectroscopy, and photoluminescence techniques were used to characterize the materials. The photocatalytic degradation of Rhodamine B (Rh B) by g-C3N4/MoS2 composites with different mass ratios was investigated under visible light. The results show that a small amount of MoS2 combined with g-C3N4 can significantly improve photocatalytic activity. The g-C3N4/MoS2 composite with a mass ratio of 1:8 has the highest photocatalytic activity, and the degradation rate of Rh B increases from 50 to 99.6%. The main reason is that MoS2 and g-C3N4 have a matching band structure. The separation rate of photogenerated electron–hole pairs is enhanced. So the g-C3N4/MoS2 composite can improve the photocatalytic activity. Through the active material capture experiment, it is found that the main active material in the photocatalytic reaction process is holes, followed by superoxide radicals.

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Acknowledgements

This study was funded by the National Natural Science Foundation of China (61664008), Yan’an Science and Technology Planning Project (2019ZCNZ-001); Yan’an University Industry-University-Research Cooperation Project (CXY201902); Research Fund for key Laboratories jointly built by provinces and cities of Shaanxi Province for Intelligent Processing of Big Data (IPBED11, IPBED16); Graduate Education Reform Program of Yan’an University (YDYJG2019018).

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Authors and Affiliations

  1. School of Physics and Electronic Information, Yan’an University, Yan’an, 716000, China

    Yu Fan, Yan-ning Yang & Chen Ding

  2. Shaanxi Key Laboratory of Intelligent Processing of Big Energy Data, Yan’an University, Yan’an, 716000, China

    Yan-ning Yang

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Fan, Y., Yang, Yn. & Ding, C. Preparation of g-C3N4/MoS2 Composite Material and Its Visible Light Catalytic Performance. J Inorg Organomet Polym 31, 4722–4730 (2021). https://doi.org/10.1007/s10904-021-02099-7

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