DOI: 10.1016/j.watres.2018.03.012
Scopus记录号: 2-s2.0-85043523598
论文题名: Persistent free radicals in carbon-based materials on transformation of refractory organic contaminants (ROCs) in water: A critical review
作者: Qin Y. ; Li G. ; Gao Y. ; Zhang L. ; Ok Y.S. ; An T.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 137 起始页码: 130
结束页码: 143
语种: 英语
英文关键词: Black carbon
; Carbon-based materials
; Hydrochar
; Persistent free radicals
; Pollution control mechanism
; Refractory organic contaminants
Scopus关键词: Carbonization
; Free radicals
; Pollution control
; Refractory materials
; Black carbon
; Carbon based materials
; Catalytic degradation
; Hydrochar
; Hydrothermal carbonization
; Natural environments
; Organic contaminant
; Transformation mechanisms
; Amorphous carbon
; black carbon
; carbon
; free radical
; carbon
; free radical
; black carbon
; carbon
; catalysis
; free radical
; literature review
; organic pollutant
; persistence
; pollutant removal
; pollution control
; transformation
; water treatment
; aquatic environment
; carbon source
; catalysis
; concentration (parameters)
; environmental management
; oxidation
; precursor
; priority journal
; pyrolysis
; reduction (chemistry)
; refractory organic contaminant
; Review
; surface area
; synthesis
; water contamination
; water pollutant
; water pollution control
; chemistry
; ecosystem restoration
; water management
; water pollutant
; Carbon
; Environmental Restoration and Remediation
; Free Radicals
; Water Pollutants
; Water Purification
英文摘要: With the increased concentrations and kinds of refractory organic contaminants (ROCs) in aquatic environments, many previous reviews systematically summarized the applications of carbon-based materials in the adsorption and catalytic degradation of ROCs for their economically viable and environmentally friendly behavior. Interestingly, recent studies indicated that carbon-based materials in natural environment can also mediate the transformation of ROCs directly or indirectly due to their abundant persistent free radicals (PFRs). Understanding the formation mechanisms of PFRs in carbo-based materials and their interactions with ROCs is essential to develop their further applications in environment remediation. However, there is no comprehensive review so far about the direct and indirect removal of ROCs mediated by PFRs in amorphous, porous and crystalline carbon-based materials. The review aims to evaluate the formation mechanisms of PFRs in carbon-based materials synthesized through pyrolysis and hydrothermal carbonization processes. The influence of synthesis conditions (temperature and time) and carbon sources on the types as well as the concentrations of PFRs in carbon-based materials are also discussed. In particular, the effects of metals on the concentrations and types of PFRs in carbon-based materials are highlighted because they are considered as the catalysts for the formation of PFRs. The formation mechanisms of reactive species and the further transformation mechanisms of ROCs are briefly summarized, and the surface properties of carbon-based materials including surface area, types and number of functional groups, etc. are found to be the key parameters controlling their activities. However, due to diversity and complexity of carbon-based materials, the exact relationships between the activities of carbon-based materials and PFRs are still uncertain. Finally, the existing problems and current challenges for the ROCs transformation with carbon-based materials are also pointed out. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112832
Appears in Collections: 气候减缓与适应
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作者单位: Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, China; Korea Biochar Research Center, O-Jeong Eco-Resilience Institute & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, South Korea
Recommended Citation:
Qin Y.,Li G.,Gao Y.,et al. Persistent free radicals in carbon-based materials on transformation of refractory organic contaminants (ROCs) in water: A critical review[J]. Water Research,2018-01-01,137