双金属片
催化作用
单线态氧
聚合
材料科学
化学工程
多酚
光化学
氧气
化学
有机化学
聚合物
复合材料
工程类
抗氧化剂
作者
Yue Wang,Zhenglong Liu,Weilu Kang,Tielong Li,Haitao Wang
标识
DOI:10.1021/acsestengg.4c00237
摘要
Recent progress has brought carbon-confined transition metal catalysts to the forefront as effective agents for Fenton-like reactions. However, achieving a stable integration of densely loaded and well-dispersed transition metals onto carbon support poses significant challenges. Herein, we introduce a plant polyphenol-driven polymerization-confinement method for the synthesis of a highly dispersed FeCo bimetallic catalyst (FeCo@NGB). Utilizing the chelating effect of tea polyphenols with metal ions and their subsequent polymerization and confinement offers a durable solution for stabilizing the FeCo bimetallic sites. The resulting FeCo@NGB demonstrates exceptional performance in activating peroxymonosulfate (PMS) for the swift degradation of tetracycline (TC), with a 99.5% reduction achieved in just 30 min, predominantly through a singlet oxygen ( 1 O 2 )-driven pathway. Experimental and theoretical calculations highlight the pivotal role of atomically dispersed FeN 4 –CoN 3 sites in facilitating rapid electron transfer between the catalyst and PMS, thereby enhancing 1 O 2 production. This work not only advances the development of high-performance multiphase catalysts but also introduces a compelling strategy for water purification leveraging nonradical oxidative pathways.
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