Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 785, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2021.147296
Keywords
One-pot pyrolysis; Iron oxide; Porous structure; Catalytic oxidation; Peroxymonosulfate
Categories
Funding
- Tianjin Science and Technology Support Plan Key Projects [20YFZCSN00610]
- National Natural Science Foundation of China [U20A20153]
Ask authors/readers for more resources
In this study, iron oxide supported on porous nitrogen doped carbon was synthesized via a facile pyrolysis method, showing superior catalytic oxidation ability and potential for degrading organic pollutants. Key factors for the enhanced activity include high specific surface area, structural defects, and synergistic effect between FexOy and nitrogen doped carbon.
Iron oxide (FexOy) supported on porous nitrogen doped carbon is synthesized by a facile pyrolysis method. SiO2 and NaNO3 are used as the template and activation agent respectively for porous structure generation and large specific surface area (SSA) creation. The obtained materials show superior catalytic oxidation ability and can activate peroxymonosulfate (PMS) in a wide pH range (3-9) to degrade organic pollutants. The degradation process is a two-stage reaction, including a rapid initial decay and a following slow reaction stage. According to the free radical quenching experiments, electron paramagnetic resonance (EPR) spectroscopy analysis, and electrochemical tests, the superoxide radical (O-2 center dot(-)) and singlet oxygen (O-1(2)) are proved to play crucial roles in organics degradation. The high SSA (773 m(2) g(-1)), abundant of structural defects, and synergistic effect between FexOy and the nitrogen doped carbon are the key factors for the enhanced activity. The catalysts in this study can be synthesized easily and contain no toxic metals, thus should have great potential in the wastewater remediation. (C) 2021 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available