Fe@Fe2O3 core-shell nanowires as an iron reagent.: 3.: Their combination with CNTs as an effective oxygen-fed gas diffusion electrode in a neutral electro-Fenton system
Fe@Fe2O3 core-shell nanowires as an iron reagent.: 3.: Their combination with CNTs as an effective oxygen-fed gas diffusion electrode in a neutral electro-Fenton system
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DOI：
10.1021/jp073617c
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发表时间：
2007-10-11
影响因子：
3.7
通讯作者：
Qiu, Jianrong
中科院分区：
文献类型：
--
作者：
Ai, Zhihui;Mei, Tao;Qiu, Jianrong
在这项研究中，核-壳Fe@Fe2O3纳米线和多壁碳纳米管（CNTs）与聚（PTFE）结合，然后用作氧气供给气体扩散电极。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、能量色散X射线分析（EDX）和透射电子显微镜（TEM）对所得的Fe@Fe2O3/CNT复合电极进行了表征。利用该气体扩散阴极建立了一种新的电芬顿体系，该体系通过还原吸附在阴极上的O-2电生成过氧化氢，同时通过Fe@Fe2O3纳米线的缓慢泄漏产生铁离子.在中性pH条件下，120 min内罗丹明B（RhB）的降解率达到91.5%，表明该体系具有良好的废水处理前景。此外，进行循环伏安法（CV）实验以探测Fe@Fe2O3/CNT电极上的反应。
In this study, core-shell Fe@Fe2O3 nanowires and multiwall carbon nanotubes (CNTs) were combined with poly(tetrafluoroethylene) (PTFE) and then used as an oxygen-fed gas diffusion electrode. The resulting Fe@Fe2O3/CNT composite electrode was examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), and transmission electron microscopy (TEM). A novel electro-Fenton (E-Fenton) system was established with the resulting gas diffusion cathode, where hydrogen peroxide was electrogenerated by the reduction of O-2 adsorbed on the cathode and iron ions were produced by the slow leakage of Fe@Fe2O3 nanowires, simultaneously. The degradation of rhodamine B (RhB) in this E-Fenton system reached 91.5% in 120 min at neutral pH, indicating this system is very promising for wastewater treatment. Moreover, cyclic voltammetry (CV) experiments were performed to probe the reactions on the Fe@Fe2O3/CNT electrode.