期刊
CATALYSTS
卷 12, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/catal12111309
关键词
degradation of organic pollutants; heterogeneous catalysis; surface plasmon resonance; visible light; Z-scheme photocatalyst
资金
- National Natural Science Foundation of China [22176120, 22206118]
- Shaanxi Thousand Talents Plan-Youth Program Scholars
In this study, a novel visible-light-driven Z-scheme photocatalyst was constructed using a hydrothermal method. The photocatalyst exhibited excellent performance in degrading organic pollutants and provided insights into the mechanism of Z-scheme photocatalysts.
As a green and sustainable technology to relieve environmental pollution issues, semiconductor photocatalysis attracted great attention. However, most single-component semiconductors suffer from high carrier recombination rate and low reaction efficiency. Here, we constructed a novel visible-light-driven Z-scheme g-C3N4/AgBr-Ag photocatalyst (noted as CN-AA-0.05) using a hydrothermal method with KBr as the bromine source. The CN-AA-0.05 photocatalyst shows an excellent photocatalytic degradation performance, and a rhodamine B (RhB) degradation ratio of 96.3% in 40 min, and 2-mercaptobenzothiazole (MBT) degradation ratio of 99.2% in 18 min are achieved. Mechanistic studies show that the remarkable performance of CN-AA-0.05 is not only attributed to the enhanced light absorption caused by the Ag SPR effect, but also the efficient charge transfer and separation with Ag nanoparticles as the bridge. Our work provides a reference for the design and construction of efficient visible-light-responsive Z-scheme photocatalysts, and an in-depth understanding into the mechanism of Z-scheme photocatalysts.
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