Nitrogen-doped carbon modified with boron atoms activating peroxydisulfate for sulfamethoxazole degradation: The electron transfer-dominated pathway
文献类型： 外文期刊
作者： Chen, Yaoning 1 ; Zhao, Chen 1 ; Li, Yuanping 1 ; Zhao, Mengyang 1 ; Kang, Huayue 1 ; Liu, Yihuan 4 ; Jiang, Hongjuan 1 ; Chen, Li 1 ; Wang, Jun 1 ; Zhou, Wencheng 1 ; Chi, Nianping 3 ;
作者机构： 1.Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China
2.Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410082, Peoples R China
3.Hunan City Univ, Sch Municipal & Geomat Engn, Yiyang 413000, Hunan, Peoples R China
4.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China
关键词： Peroxydisulfate; Non-radical pathway; Electron transfer pathway; High stability
期刊名称：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING （ 影响因子：7.2； 五年影响因子：7.6 ）
ISSN： 2213-2929
年卷期： 2025 年 13 卷 2 期
页码：
收录情况： SCI
摘要： The non-radical pathway has attracted extensive interest due to its unique advantages in persulfate activation. However, the conversion between non-radical pathways remains elusive. In this study, the nitrogen and boron co-doped carbon (NB-C) was synthesized from agroforestry waste by a simple co-pyrolysis method for activating peroxydisulfate (PDS) to degrade sulfamethoxazole (SMX). The results showed that nearly 100 % removal of SMX (20 mg/L) was achieved at a low catalyst dose (0.15 g L- 1). Combining the results of quenching experiments, electron paramagnetic resonance, in situ Raman spectroscopy, premixing experiments, and electrochemical analyses, a non-radical activation mechanism dominated by the electron transfer pathway (ETP) was identified. More importantly, we have quantified the oxidation contribution of various reactive oxygen species (ROS) to SMX degradation by steady-state concentration calculations. The experimental and characterization data indicated that the carbon structure of nitrogen-doped carbon (N-C) was altered with the introduction of boron (B), and the main active sites were replaced by pyrrolic N, sp2-C, and the new BC3 site, thereby transforming the reaction pathway from 1O2 oxidation (44.43 %) into an almost complete ETP (92.34 %). Benefitting from the advantages of the ETP, the NB-C/PDS system maintains excellent adaptability in complex background water matrices and over a wide pH range (3-11). Moreover, unlike the N-C/PDS system based on 1O2 oxidation, the reusability of the NB-C/PDS system was significantly improved, which further emphasizes its practical application potential. Finally, three possible degradation pathways of SMX were proposed by liquid chromatography- mass spectrometry and the toxicity of the intermediates was evaluated.
- 相关文献
作者其他论文 更多>>
-
In-situ structural modification on spinel oxide to achieve efficient removal of refractory organics: Triple optimisation of degradation performance
作者：Chen, Yaoning;Zhou, Wencheng;Kang, Huayue;Zhao, Mengyang;Wang, Jun;Zhao, Chen;Zou, Bin;Jia, Xuyang;Chen, Yaoning;Zhou, Wencheng;Kang, Huayue;Zhao, Mengyang;Wang, Jun;Zhao, Chen;Zou, Bin;Jia, Xuyang;Li, Yuanping;Zhang, Wei;Liu, Yihuan
关键词：Spinel oxide; Photocatalysis; Heterogeneous structures; Oxygen vacancies; Peroxymonosulfate
-
Novel N-functionalized tourmaline/pomelo peel biochar composite: preparation, characteristics, and mechanisms in adsorbing Pb2+
作者：Liu, Yihuan;Liu, Yuxue;Liu, Yihuan;Chen, Yaoning;Zhao, Mengyang;Liu, Yihuan;Chen, Yaoning;Zhao, Mengyang;Li, Yuanping
关键词：Nitrogen doping; Tourmaline; Biochar composite; Pb 2+adsorption; Soil remediation
-
Polystyrene microplastics exacerbate mitophagy through mitochondrial dysfunction in the duck lung
作者：Gu, Tiantian;Duan, Mingcai;Chen, Li;Tian, Yong;Xu, Wenwu;Zeng, Tao;Lu, Lizhi;Kong, Minghua;Lu, Lizhi
关键词：Duck; Polystyrene microplastics; Mitochondrion; TCA cycle; Mitophagy
-
Comparative Transcriptome Profiling of Ileal and Cecal Tissues Between Pekin Ducks and Shaoxing Ducks
作者：Wang, Dandan;Hu, Zhengyu;Zhao, Ayong;Zeng, Tao;Gu, Tiantian;Xu, Wenwu;Tian, Yong;Lu, Lizhi;Chen, Li
关键词：cecum; duck; ileum; transcriptome
-
Mapping pesticide-induced metabolic alterations in human gut bacteria
作者：Chen, Li;Guo, Chao;Zhang, Huan;Zhang, Shiqi;Gold, Andrew;Hu, Ming;Zhu, Jiangjiang;Chen, Li;Zhang, Huan;Zhu, Jiangjiang;Yan, Hong;Johnson, Caroline H.;Yan, Hong;Di, Shanshan;Wang, Xinquan;Wang, Yu;Wu, Dayong
关键词：
-
The difference between young and older ducks: Amino acid, free fatty acid, nucleotide compositions and breast muscle proteome
作者：Gu, Tiantian;Duan, Mingcai;Chen, Li;Tian, Yong;Xu, Wenwu;Zeng, Tao;Lu, Lizhi
关键词：Duck; Amino acid; Free fatty acid; Nucleotide; Proteome
-
New insights into ovarian regression-related mitochondrial dysfunction in the late-laying period
作者：Gu, Tiantian;Liu, Jinyu;Zeng, Tao;Chen, Li;Tian, Yong;Xu, Wenwu;Lu, Lizhi
关键词：Ovarian regression; Mitochondrial dysfunction; Oxidative stress; Ferroptosis; Ceased-laying duck
