DOI: 10.1016/j.watres.2018.10.087
Scopus记录号: 2-s2.0-85055900907
论文题名: Singlet oxygen-dominated non-radical oxidation process for efficient degradation of bisphenol A under high salinity condition
作者: Luo R. ; Li M. ; Wang C. ; Zhang M. ; Nasir Khan M.A. ; Sun X. ; Shen J. ; Han W. ; Wang L. ; Li J.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 416
结束页码: 424
语种: 英语
英文关键词: Anions
; High salinity condition
; Inhibiting effect
; Non-radical
; Singlet oxygen
Scopus关键词: Carbon
; Catalyst activity
; Chlorine compounds
; Doping (additives)
; Electron spin resonance spectroscopy
; Ions
; Negative ions
; Oxidation
; Oxygen
; Paramagnetic resonance
; Phenols
; Saline water
; Catalytic performance
; Degradation of organic contaminants
; Electron paramagnetic resonances (EPR)
; Environmental remediation
; High salinity
; Inhibiting effect
; Non-radical
; Singlet oxygen
; Catalytic oxidation
; 4,4' isopropylidenediphenol
; anion
; graphite
; nitrogen
; peroxymonosulfate
; singlet oxygen
; sulfate
; unclassified drug
; anion
; catalysis
; dye
; environmental degradation
; experimental study
; inhibition
; organic pollutant
; oxidation
; oxygen
; salinity
; scavenging (chemistry)
; Article
; biodegradation
; catalysis
; catalyst
; electron spin resonance
; high performance liquid chromatography
; mass fragmentography
; oxidation
; pH
; priority journal
; salinity
英文摘要: The degradation of organic contaminants under high salinity condition is still a challenge for environmental remediation due to the inhibiting effect resulted from the side reactions between radicals and anions. Here, we demonstrate the non-radical oxidation process via peroxymonosulfate (PMS) activation by metal-free carbon catalyst for efficiently decomposing bisphenol A (BPA) in saline water. The nitrogen-doped graphitic carbon (NGC700) exhibits excellent catalytic activity for depredating BPA at acid and neutral pH. Based on the scavenger experiments and electron paramagnetic resonance (EPR) analyses, the mechanism of catalytic oxidation was elucidated as the non-radical pathway, and singlet oxygen was identified as the primary reactive species. Experiments on the influence of anions (5–500 mM) further show that the inhibiting effect was overcame due to the non-radical process. Interestingly, Cl − markedly facilitated the catalytic performance by generating HOCl in the catalytic process. The results highlight leveraging the non-radical pathway dominated by singlet oxygen to conquer the inhibitory effect of anions in NGC700/PMS system, which represents a crucial step towards environmental remediation under high salinity condition. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122201
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
Recommended Citation:
Luo R.,Li M.,Wang C.,et al. Singlet oxygen-dominated non-radical oxidation process for efficient degradation of bisphenol A under high salinity condition[J]. Water Research,2019-01-01