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题名: Innovative photo-Fenton catalysis by PE-FeOx films leading to methylene blue (MB) degradation: Kinetics, surface properties and mechanism
作者: Suarez, Laura; Dong, Huiyu; Pulgarin, Cesar; Sanjines, Rosendo; Qiang, Zhimin; Kiwi, John
刊名: APPLIED CATALYSIS A-GENERAL
出版日期: 2016-06-05
卷号: 519, 期号:0, 页码:68-77
关键词: PE-FeOx synthesis ; MB-discoloration ; Visible light ; XPS ; AFM ; XRD ; Repetitive MB degradation ; H2O2 ; Heterogeneous catalysis ; ROS diffusion distances
DOI: 10.1016/j.apcata.2016.03.029
部门归属: 环境水质学国家重点实验室
英文摘要: This study reports an innovative preparation polyethylene-FeOx (PE-FeOx films) leading to the degradation of the methylene blue (MB) dye under low intensity sunlight/visible light (>400 nm). The intermediate highly oxidative radicals generated by PE-FeOx leading to MB discoloration/degradation in the presence of H2O2 were identified. The relative contribution to the MB discoloration by the Fe ions leached from the PE-FeOx films into solution was determined quantitatively. This allows estimating the contribution of the heterogeneous and of the homogeneous leading to MB-degradation. The shift in the peak binding energy (BE) for Fe was detected by photoelectron spectroscopy (XPS) after the MB degradation providing the evidence for redox catalysis occurring during MB-degradation at the PE-FeOx surface. The particle size and roughness of the PE-FeOx surfaces were determined by atomic force spectroscopy (AFM). The spectral properties of PE-FeOx films are reported and insight is provided for the mechanism of MB-degradation. (C) 2016 Elsevier B.V. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36055
Appears in Collections:环境水质学国家重点实验室_期刊论文

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