4.8 Article

Constructing Fe-MOF-Derived Z-Scheme Photocatalysts with Enhanced Charge Transport: Nanointerface and Carbon Sheath Synergistic Effect

Journal

ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 22, Pages 25494-25502

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c06601

Keywords

photocatalysis; Z-scheme; nanointerface; carbon sheath; environmental treatment

Funding

  1. Natural Science Foundation of China [21706295, 51525805]
  2. Natural Science Foundation of Guangdong Province [2020A1515010798]
  3. Pearl River SAMP
  4. T Nova Program of Guangzhou [201906010024]

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Creatively constructing Z-scheme composites is a promising and common strategy for designing effective photocatalyst systems. Herein, we synthesized Z-scheme Fe2O3@Ag-ZnOgC heterostructures from the Fe-MOFs and applied it to photodegradation of tetracycline and methylene blue pollutants in wastewater. The optimized sample exhibits a remarkable performance as well as stability under visible light irradiation. The calculating and experimental results demonstrate that the Fe2O3@ ZnO nanointerface and carbon sheath together boost the transfer efficiency of photogenerated carriers and absorption ability, thereby improving the photocatalytic activity. Furthermore, detailed mechanism investigation reveals the pivotal role of reactive oxygen species ((OH)-O-center dot and O-center dot(2)-) generated, resulting in remarkable performance. In addition, cell biology experiments reveal that the wastewater after photocatalytic treatment has good biological compatibility, which is important for applications. This work provides valuable information for constructing high-performance Z-scheme photocatalysts from MOFs for environmental treatment.

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