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Magnetic Core–Shell-Structured FeO x /CN Catalyst Mediated Peroxymonosulfate Activation for Degradation of 2,4-Dichlorophenol via Non-Radical Pathway
https://orcid.org/0000-0002-7311-707X
In this study, a magnetic nano-FeO x /CN core–shell-structured catalyst with a high operating stability was successfully prepared by a coordinating polymer pyrolysis strategy. It exhibited high catalytic activity in peroxymonosulfate (PMS)-based advanced oxidation processes. Under neutral and room temperature conditions, the removal efficiency of 2,4-dichlorophenol (2,4-DCP) via FeO x /CN/PMS system reached more than 90% within 60 min, and the removal of total organic carbon reached 89% within 90 min. The key operating parameters were evaluated and analyzed. Besides, in five consecutive degradation experiments, Fe-3/CN showed high stability, low iron ion loss, and excellent magnetic separation and recovery performance, demonstrating its potential as a practical Fenton-like catalyst. The abundant and orderly N pores in the CN structure provided key conditions for the anchoring and dispersion of nano-FeO x particles. Electron paramagnetic resonance and free radical scavenging experiments proved that 1O2 is the main reactive oxygen species (ROS) that causes 2,4-DCP degradation (about 76.4% of the total contribution). Combined with density functional theory, the degradation pathway of 2,4-DCP was reasonably predicted. This study provides new ideas for the design and synthesis of Fenton-like catalysts with high stability and high activity.
The core−shelled FeO x /CN was synthesized for the efficient degradation of 2,4-dichlorophenol through non-free radical pathway, with high stability and reusability.
Magnetic Core–Shell-Structured FeO x /CN Catalyst Mediated Peroxymonosulfate Activation for Degradation of 2,4-Dichlorophenol via Non-Radical Pathway
https://orcid.org/0000-0002-7311-707X
In this study, a magnetic nano-FeO x /CN core–shell-structured catalyst with a high operating stability was successfully prepared by a coordinating polymer pyrolysis strategy. It exhibited high catalytic activity in peroxymonosulfate (PMS)-based advanced oxidation processes. Under neutral and room temperature conditions, the removal efficiency of 2,4-dichlorophenol (2,4-DCP) via FeO x /CN/PMS system reached more than 90% within 60 min, and the removal of total organic carbon reached 89% within 90 min. The key operating parameters were evaluated and analyzed. Besides, in five consecutive degradation experiments, Fe-3/CN showed high stability, low iron ion loss, and excellent magnetic separation and recovery performance, demonstrating its potential as a practical Fenton-like catalyst. The abundant and orderly N pores in the CN structure provided key conditions for the anchoring and dispersion of nano-FeO x particles. Electron paramagnetic resonance and free radical scavenging experiments proved that 1O2 is the main reactive oxygen species (ROS) that causes 2,4-DCP degradation (about 76.4% of the total contribution). Combined with density functional theory, the degradation pathway of 2,4-DCP was reasonably predicted. This study provides new ideas for the design and synthesis of Fenton-like catalysts with high stability and high activity.
The core−shelled FeO x /CN was synthesized for the efficient degradation of 2,4-dichlorophenol through non-free radical pathway, with high stability and reusability.
Magnetic Core–Shell-Structured FeO x /CN Catalyst Mediated Peroxymonosulfate Activation for Degradation of 2,4-Dichlorophenol via Non-Radical Pathway
https://orcid.org/0000-0002-7311-707X
In this study, a magnetic nano-FeO x /CN core–shell-structured catalyst with a high operating stability was successfully prepared by a coordinating polymer pyrolysis strategy. It exhibited high catalytic activity in peroxymonosulfate (PMS)-based advanced oxidation processes. Under neutral and room temperature conditions, the removal efficiency of 2,4-dichlorophenol (2,4-DCP) via FeO x /CN/PMS system reached more than 90% within 60 min, and the removal of total organic carbon reached 89% within 90 min. The key operating parameters were evaluated and analyzed. Besides, in five consecutive degradation experiments, Fe-3/CN showed high stability, low iron ion loss, and excellent magnetic separation and recovery performance, demonstrating its potential as a practical Fenton-like catalyst. The abundant and orderly N pores in the CN structure provided key conditions for the anchoring and dispersion of nano-FeO x particles. Electron paramagnetic resonance and free radical scavenging experiments proved that 1O2 is the main reactive oxygen species (ROS) that causes 2,4-DCP degradation (about 76.4% of the total contribution). Combined with density functional theory, the degradation pathway of 2,4-DCP was reasonably predicted. This study provides new ideas for the design and synthesis of Fenton-like catalysts with high stability and high activity.
The core−shelled FeO x /CN was synthesized for the efficient degradation of 2,4-dichlorophenol through non-free radical pathway, with high stability and reusability.
Magnetic Core–Shell-Structured FeO x /CN Catalyst Mediated Peroxymonosulfate Activation for Degradation of 2,4-Dichlorophenol via Non-Radical Pathway
Xu, Kaijie (Autor:in) / Cui, Kangping (Autor:in) / Li, Chenxuan (Autor:in) / Cui, Minshu (Autor:in) / Weerasooriya, Rohan (Autor:in) / Li, Xiaoyang (Autor:in) / Ding, Zhaogang (Autor:in) / Chen, Xing (Autor:in)
ACS ES&T Water ; 1 ; 2217-2232
08.10.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| American Chemical Society | 2021