DOI: 10.1016/j.watres.2018.06.038
Scopus记录号: 2-s2.0-85049333110
论文题名: Degradation of aqueous 2,4,4″-Trihydroxybenzophenone by persulfate activated with nitrogen doped carbonaceous materials and the formation of dimer products
作者: Pan X. ; Chen J. ; Wu N. ; Qi Y. ; Xu X. ; Ge J. ; Wang X. ; Li C. ; Qu R. ; Sharma V.K. ; Wang Z.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 143 起始页码: 176
结束页码: 187
语种: 英语
英文关键词: 2,4,4′-HBP
; Carbonaceous materials
; Nitrogen doping
; Persulfate activation
; Reaction mechanisms
Scopus关键词: Catalysts
; Chemical activation
; Electron spin resonance spectroscopy
; Films
; Graphene oxide
; Hydroxylation
; Nitrogen removal
; Paramagnetic resonance
; Polyaniline
; Polyvinyl acetates
; Reaction intermediates
; Semiconductor doping
; Sulfur compounds
; Thin walled structures
; Urea
; Yarn
; Carbonaceous materials
; Catalytic performance
; Electron paramagnetic resonances (EPR)
; Nitrogen-doping
; Personal care products
; Persulfate activations
; Reaction mechanism
; Transformation mechanisms
; Multiwalled carbon nanotubes (MWCN)
; 2,4,4' trihydroxybenzophenone
; benzophenone derivative
; carbon nanotube
; dimer
; graphene oxide
; hydroxyl group
; indole
; multi walled nanotube
; nitrogen
; persulfate
; polyaniline
; polyvinyl acetate
; sulfate
; unclassified drug
; urea
; acetate
; activation energy
; additive
; catalysis
; catalyst
; degradation
; graphite
; nitrogen
; oxidation
; polymerization
; sulfate
; transformation
; adsorption
; Article
; catalyst
; chemical reaction kinetics
; controlled study
; degradation
; desorption
; electron spin resonance
; hydroxylation
; mineralization
; oxidation
; pH
; polymerization
; priority journal
; reaction analysis
; scanning electron microscopy
; substrate concentration
; surface area
; tandem mass spectrometry
; temperature
; transmission electron microscopy
英文摘要: In this work, we systematically investigated the persulfate (PS) activation potential of a series of nitrogen doped carbonaceous materials for the degradation of 2,4,4′-trihydroxybenzophenone (2,4,4′-HBP), an additive in polyvinyl acetate films and personal care products. Nitrogen originating from urea, NH4NO3, indole and polyaniline was doped into carbonaceous materials, including hydroxylated multi-walled carbon nanotubes (CNT-OH), large-inner thin-walled carboxylated carbon nanotubes (CNT-COOH) and graphite oxide (GO), to examine the catalytic effect. The NH4NO3-CNT-OH catalyst, which showed the best catalytic performance in 2,4,4′-HBP removal, was characterized by SEM, TEM, FT-IR, Raman, BET surface area, XRD and XPS, and pyrrolic nitrogen was found to play a highly important role in the activation of PS. Under the conditions of [2,4,4′-HBP]0: [PS]0 = 1: 500, T = 25 °C, pH0 = 7.0, concentration of catalyst = 100 mg L−1, 43.48 μM 2,4,4′-HBP was completely removed in 2 h. According to electron paramagnetic resonance (EPR) spectra and radical quenching experiments, hydroxyl and sulfate radicals on the surface of the catalyst contributed to the substrate oxidation. Cleavage of C-C bridge bond, hydroxylation and polymerization were mainly involved in the oxidation process, leading to the formation of 10 intermediates (e.g., dimers), as detected by the MS/MS spectra. To the best of our knowledge, this report is the first to describe the transformation mechanism of 2,4,4′-HBP in nitrogen doped carbonaceous materials catalyzed PS system. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112581
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China; Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station, TX 77843, United States
Recommended Citation:
Pan X.,Chen J.,Wu N.,et al. Degradation of aqueous 2,4,4″-Trihydroxybenzophenone by persulfate activated with nitrogen doped carbonaceous materials and the formation of dimer products[J]. Water Research,2018-01-01,143