降级(电信)
X射线光电子能谱
扫描电子显微镜
水溶液
扫描透射电子显微镜
透射电子显微镜
衍射仪
化学
化学工程
核化学
矿化(土壤科学)
催化作用
分析化学(期刊)
材料科学
纳米技术
色谱法
氮气
复合材料
有机化学
工程类
电信
计算机科学
作者
Ting Luo,Haopeng Feng,Lin Tang,Yue Lu,Wangwang Tang,Song Chen,Jiangfang Yu,Qingqing Xie,Xilian Ouyang,Zhaoming Chen
标识
DOI:10.1016/j.cej.2019.122970
摘要
The degradation of tetracycline (TC) in aqueous environment has been studied by a novel heterogeneous electro-Fenton (HEEF) process using Cu-doped [email protected]2O3 core–shell nanoparticles (CFF) as catalyst loaded on the nickel foam as cathode. CFF was synthesized by a facile two-step reduction method and aging process, and characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), scanning transmission electron microscopy mapping (STEM-mapping), X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS). The effects of operating parameters, such as the initial pH of solution, the mass ratio of Cu/Fe and aeration mode, were investigated. The prepared CFF exhibited rapid degradation (98.1% within 2 h) and high mineralization efficiency of TC (89.8% after 6 h). Furthermore, the degradation of TC in solution remained over 90% till the seventh cycle, indicating the high stability of CFF. The mechanism of the HEEF process catalyzed by CFF was also proposed. Additionally, based on the identification of main representative by-products, plausible pathways for the mineralization of TC in aqueous solution by OH was speculated.
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