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首页> 外文期刊>RSC Advances >Magnetic recyclable CoFe2O4@PPy prepared by in situ Fenton oxidization polymerization with advanced photo-Fenton performance
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Magnetic recyclable CoFe2O4@PPy prepared by in situ Fenton oxidization polymerization with advanced photo-Fenton performance

机译：磁性再循环CoFe2O4 @ PPY通过原位芬顿氧化聚合制备，具有先进的光芬恒星性能

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摘要

Here we present a magnetic recyclable photo-Fenton catalyst CoFe _(2) O _(4) @PPy with uniform morphology and excellent dispersibility prepared via simple in situ Fenton oxidization polymerization. The CoFe _(2) O _(4) core provides good magnetic recyclability for the catalysts as well as the ion source for catalyzed decomposition of H _(2) O _(2) in PPy coating. The optimal catalytic effect can be obtained by adjusting the ratio of CoFe _(2) O _(4) and PPy. Methylene blue, Methyl orange and Rhodamine B (RhB) employed as model pollutants certificated that the catalyst exhibits a wide range of photodegradability. The decoloration rates reach nearly 100% in the photodegradation of 10 mg L ~(?1) RhB after 2 h visible-light irradiation and only low toxicity small molecules are detected by LC-MS. Moreover, the catalytic activity remains after 5 cycles with decoloration rates up to 90%. The degradation measurement in the presence of scavengers of reactive species reveals that the positive holes (h ~(+) ) and hydroxyl radical (·OH) are the main reactive oxygen species in the CoFe _(2) O _(4) @PPy system. The performance enhancement may be attributed to the combination of improved Fenton activity by coordinated Fe ~(2+) and PPy redox pairs and photo-catalytic activity by broaden adsorption and photo-generated charge separation.
机译：在这里，我们提出了一种磁性可回收光芬顿催化剂COFE _（2）O _（4）@ppy，具有均匀的形态和优异的分散性，通过简单地原位芬顿氧化聚合制备。 COFE _（2）O _（4）核心为催化剂提供良好的磁性再循环性，以及用于PPY涂层中H _（2）O _（2）的催化分解的离子源。通过调节CoFe _（2）O _（4）和PPY的比率可以获得最佳催化效果。用作模型污染物的亚甲基蓝，甲基橙和罗丹明B（RHB）认证催化剂具有广泛的光降解性。在2小时可见光照射后，10mg L〜（α1）rhb的光致辐射率达到近100％，并且仅通过LC-MS检测低毒性小分子。此外，催化活性在5个循环后保持脱色率高达90％。反应物种清除剂存在下的降解测量表明，正孔（H〜（+））和羟基（·OH）是CoFe _（2）O _（4）@ppy中的主要反应性氧物质系统。性能增强可归因于通过协调Fe〜（2+）和PPY氧化还原对和光催化活性通过拓宽吸附和光产生的电荷分离来归因于改善的FENTON活性组合。

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