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首页> 外文期刊>Materials Science and Engineering >Tartaric acid enhanced CuFe_2O_4-catalyzed heterogeneous photo-Fenton-like degradation of methylene blue
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Tartaric acid enhanced CuFe_2O_4-catalyzed heterogeneous photo-Fenton-like degradation of methylene blue

机译：酒石酸增强CuFe_2O_4催化的亚甲蓝异质光芬顿状降解

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摘要

CuFe2O4 particles were obtained by sol-gel process and characterized by XRD, SEM and EDS. The effects of tartaric acid (TA) on the degradation of methylene blue (MB) were studied in the presence of CuFe2O4 and H2O2 under light irradiation. The results showed that introducing TA enhanced MB decolorization rate from 52.0% to 92.1% within 80 min. The contribution of superoxide anions (center dot O-2(-)) was only 10% and the contribution of hydroxyl radical (center dot OH) was around 88%. For H2O2-CuFe2O4-photo system, in the presence (or absence) of TA, the dynamic change of center dot OH suggested that the addition of TA could promote the generation of hydroxyl radicals. The enhanced effect of TA in TA-H2O2-CuFe2O4-photo system could be attributed to its own structure and the dissolved metal ions of the catalyst surface. In addition, a reasonable mechanism for the complex system was elucidated.
机译：通过溶胶-凝胶法得到CuFe2O4颗粒，并通过XRD，SEM和EDS对其进行表征。在CuFe2O4和H2O2存在下，在光照下研究了酒石酸（TA）对亚甲基蓝（MB）降解的影响。结果表明，引入TA可在80min内将MB的脱色率从52.0％提高到92.1％。超氧阴离子（中心点O-2（-））的贡献仅为10％，羟基自由基（中心点OH）的贡献约为88％。对于H2O2-CuFe2O4-光体系，在有或没有TA的情况下，中心点OH的动态变化表明，添加TA可以促进羟基自由基的产生。 TA在H 2 O 2 -CuFe 2 O 4-光体系中的增强作用可以归因于其自身的结构和催化剂表面溶解的金属离子。此外，阐明了复杂系统的合理机制。

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