期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 300, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2022.121846
关键词
MIL-101(Fe); WO3; S-scheme; Photodegradation
资金
- National Natural Science Foundation of China [52102288]
- Natural Science Foundation of Zhejiang Province [LTY20B030002]
- Zhejiang Xinmiao Talents Program [2021R436013]
- National Training Program of Innovation and Entrepreneurship for Undergraduates [202110350034]
S-scheme hybrid MIL-101(Fe)/WO3 samples were prepared by immobilizing MIL-101(Fe) nanoparticles on the surface of WO3 nanoplates. The resulting hybrid sample exhibited highly efficient visible light-driven photocatalytic activity and good photostability, making it effective for the removal of TCH.
Here, a series of S-scheme hybrid MIL-101(Fe)/WO3 samples were designed and prepared by tightly immobilizing MIL-101(Fe) nanoparticles on the surface of WO3 nanoplates via a simple solvothermal reaction. The in situ loading of MIL-101(Fe) promoted charge separation because of the successful construction of the S-scheme, significantly enhancing the photocatalytic activity to efficiently remove tetracycline hydrochloride (TCH). This smart structural design endowed the synthetic MIL-101(Fe)/WO3 hybrid sample with highly efficient visible light-driven photocatalytic activity and good photostability. The optimized MIL-101(Fe)/WO3 (1:1) hybrid photocatalyst exhibited the highest photocatalytic efficiency with a photodegradation efficiency of up to 93.8%. Dissimilar to certain reports, the photocatalytic activity over hybrid MIL-101(Fe)/WO3 samples was majorly driven by photogenerated holes (h(+)). In addition, the S-scheme photocatalytic mechanism was fully demonstrated by systematic characterizations including active species capture experiments and electron paramagnetic resonance analyses. This study sheds light on the design and synthesis of S-scheme hybrid photocatalysts for highly efficient applications of photocatalysis for removing TCH.
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