期刊
CHEMICAL ENGINEERING JOURNAL
卷 414, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.128867
关键词
Vacancy engineering; Z-Scheme; MoSe2; BiOI; Anti-biofouling
资金
- Postdoctoral Science Foundation of China [2019M663416]
- Defense Industrial Technology Development Program [JCKY2019604C001]
- National Key Research and Development Project [2019YFC0312102]
- Domain Foundation of Equipment Advance Research of 13th Five-year Plan [61409220419]
- Fundamental Research Funds of the Central University [3072020CF1022]
- Heilongjiang Touyan Innovation Team Program
Vacancy engineering and constructing a built-in electric field are effective strategies to enhance the photocatalytic performance of semiconductors. The Z-scheme photocatalyst 0D/3D-BiOI/MoSe2 heterojunction promotes separation of photogenerated carriers through defect engineering and the interface with the built-in electric field. The composite membrane shows enhanced photocatalytic efficiency by controlling the reaction at the surface and interface, demonstrating a simple and sustainable strategy for clean water production.
Vacancy engineering and constructing a built-in electric field are effective strategies to enhance the photocatalytic performance of semiconductors. Herein, a novel Z-scheme photocatalyst 0D/3D-BiOI/MoSe2-heterojunction-modified polyvinylidene fluoride (PVDF) membrane is prepared by constructing a built-in electric field and implementing defect engineering. The 0D/3D BiOI/MoSe2 heterojunction not only has a wide light absorption range but also promotes the separation of photogenerated carriers through defect engineering and the interface with the built-in electric field. Constructing the built-in electric field greatly facilitates the scavenging of the photogenerated electrons on the surface of BiOI by MoSe2, thereby enhancing the overall photocatalytic activity of the composites. Furthermore, the heat-collecting photocatalytic composite membrane controls the reaction at the surface and interface. The membrane is composed of a unique pyroelectric substrate PVDF-hexafluoropropane, a hollow interior photothermal material MoSe2, and a representative photocatalyst BiOI. The enhanced photocatalytic efficiency is demonstrated by the degradation of tetracycline, which reaches 98% after 120 min. This all-in-one multifunctional porous membrane provides a simple and sustainable strategy for clean water production.
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