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作者:

Fu, Bo (Fu, Bo.) | Yan, Zihao (Yan, Zihao.) | Sun, Zhirong (Sun, Zhirong.) (学者:孙治荣)

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EI Scopus SCIE

摘要:

The preparation of stable and high-efficiency heterogeneous electro-Fenton cathodes for the treatment of pollutants is important for environmental remediation. Herein, a novel N-doped MOF-derived Fe/Co bimetallic catalyst was in-situ grown on graphite felt (GF) surface to yield a composite cathode Fe/CoNHDC-400@GF for use in electro-Fenton process. The introduction of cobalt accelerated electron transfer due to existing polyvalent metals. The synergistic effect between Co-0, Co-II, Co-III, Fe-II, and Fe. enabled the continuous generation of reactive oxygen species ((OH)-O-center dot and O-center dot(2)-). Under near-neutral conditions (pH=6.5), complete removal of 10 mg L-1 chloroquine phosphate (CQP) was achieved within 60 min. Additionally, efficient removal was also achievable over a wide pH range (pH=3-11). The mechanistic investigations indicated (OH)-O-center dot as a major active oxygen species for CQP degradation. A combination of the experimental results with density functional theory calculations (DFT) clarified the degradation pathway and intermediate products of CQP. Moreover, the toxicity of degradation products significantly reduced. Overall, valuable insights on preparing composite cathodes grown in-situ for efficient removal of refractory pollutants from wastewater during the heterogeneous electro-Fenton process were provided, useful for future consideration.

关键词:

Heterogeneous electro-Fenton process In-situ catalysis Chloroquine phosphate Polyvalent metals synergistic effect

作者机构:

  • [ 1 ] [Fu, Bo]Beijing Univ Technol, Coll Environm Sci & Engn, Dept Environm Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Yan, Zihao]Beijing Univ Technol, Coll Environm Sci & Engn, Dept Environm Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Sun, Zhirong]Beijing Univ Technol, Coll Environm Sci & Engn, Dept Environm Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Fu, Bo]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
  • [ 5 ] [Yan, Zihao]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
  • [ 6 ] [Sun, Zhirong]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China

通讯作者信息:

  • [Sun, Zhirong]Beijing Univ Technol, Coll Environm Sci & Engn, Dept Environm Engn, Beijing 100124, Peoples R China;;

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来源 :

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

ISSN: 2213-2929

年份: 2024

期: 3

卷: 12

7 . 7 0 0

JCR@2022

被引次数:

WoS核心集被引频次:

SCOPUS被引频次: 7

ESI高被引论文在榜: 0 展开所有

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