MoS2/Bi2WO6复合光催化剂的制备及可见光光催化性能研究
Preparation of MoS2/Bi2WO6 Composite Photocatalysts and Study on Photocatalytic Performance under Visible Light
DOI: 10.12677/NAT.2021.113009, PDF,    国家自然科学基金支持
作者: 吴海宁, 姚 丽, 陈 铭：合肥工业大学材料科学与工程学院，安徽 合肥；吕 珺*, 徐光青：合肥工业大学材料科学与工程学院，安徽 合肥；先进能源与环境材料国际科技合作基地，安徽 合肥；先进功能材料与器件安徽省重点实验室，安徽 合肥
关键词: 钨酸铋；二硫化钼量子点；光催化性能；抗生素降解； Bi2WO6； MoS2 Quantum Dots； Photocatalytic Performance； Antibiotic Degradation
摘要: 本文采用静电自组装法制备MoS2/Bi2WO6复合光催化剂，通过X射线衍射仪、扫描电子显微镜、透射电子显微镜和X射线光电子能谱仪等系统地表征了MoS2/Bi2WO6复合光催化剂的微观形貌、元素组成和晶体结构。以左氧氟沙星(LVFX)为目标降解物对MoS2/Bi2WO6复合光催化剂进行光催化活性测试，并分析其光催化降解机理。结果表明：负载MoS2量子点后，MoS2/Bi2WO6复合光催化剂的可见光吸收能力有所改善，光生载流子迁移效率明显提升。最优的MoS2/Bi2WO6复合光催化剂在可见光照射1 h后对LVFX的降解率达到83%，而Bi2WO6在可见光照射1 h后降解率仅为69%，复合光催化剂降解动力学常数为0.0183 min−1，降解速率是Bi2WO6的1.22倍。 MoS2/Bi2WO6 composite photocatalysts were prepared by electrostatic self-assembly method in this paper. The morphology, composition and structure of the MoS2/Bi2WO6 composite photocatalysts are systematically characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The photocatalytic degradation for levofloxacin (LVFX) of MoS2/Bi2WO6 composite photocatalysts were studied, and the photocatalytic mechanism was analyzed. The obtained results indicated that both the visible light absorption capacity and the photogenerated carrier migration rates of MoS2/Bi2WO6 composite photocatalysts were significantly improved after loading MoS2 quantum dots. The photocatalytic degradation rate of the optimal MoS2/Bi2WO6 composite photocatalyst for LVFX reached 83%, while the degradation rate of Bi2WO6 was only 69% under visible light irradiation for 1 h. The degradation kinetic constant of the composite photocatalyst was 0.0183 min−1, which was 1.22 times than that of Bi2WO6.
文章引用：吴海宁, 姚丽, 陈铭, 吕珺, 徐光青. MoS2/Bi2WO6复合光催化剂的制备及可见光光催化性能研究[J]. 纳米技术, 2021, 11(3): 70-78. https://doi.org/10.12677/NAT.2021.113009

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