| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Synthesis and Photocatalytic Properties of CuS/CQDs/g-C3N4 |
| YU Qiaoling1,2, LIU Chengbao1,2,3,*, JIN Tao1,2, CHEN Feng1,2,3, QIAN Junchao1,2,3, QIU Yongbin4, MENG Xianrong5, CHEN Zhigang1,2,3
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1 Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
2 School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
3 Jiangsu Collaborative Innovation Center of Technology and Material for Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
4 Jiangsu Province Ceramics Research Institute Co., Ltd., Yixing 214221, Jiangsu, China
5 Suzhou Institute of Environmental Science, Suzhou 215007, Jiangsu, China |
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Abstract CQDs (Carbon quantum dots) were obtained by hydrothermal method with lemon juice as the carbon source. CuS/CQDs/g-C3N4 was synthesized using copper trihydrate nitrate (Cu(NO3)2·3H2O), thiourea(CH4N2S) and lemon juice as starting materials via ultrasonic shock method. CuS/CQDs/g-C3N4 three-phase composite photocatalyst with p-n-type heterojunction structure was obtained successfully. The structure and morphology of the material were analyzed by various methods, such as XRD, SEM, TEM, XPS, PL, BET and UV-Vis. The results showed that the interface structure is well constructed with high purity and uniform distribution. In the photocatalytic degradation experiment, the best photocatalytic degradation of the CuS/CQDs/g-C3N4 composite was achieved at approximately 72.1% when the CuS content was 10wt%. After the RhB degradation in 4 cycles, the photocatalytic degradation efficiency of the composite material was not significantly reduced, and it still remained at 65.2%. Finally, it is clear that ·O2-radical is the main factor in photocatalytic degradation, and h+ radical is the second factor.
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Published:
Online: 2024-06-25
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| Fund:Natural Science Foundation of Jiangsu Province (BK20180103,BK20180971), Suzhou Science and Technology Deve-lopment Plan Project (SS202036). |
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2024, Vol. 38 
