DOI: 10.1016/j.watres.2018.03.027
Scopus记录号: 2-s2.0-85043516097
论文题名: Facile synthesis of magnetic Fe3O4@BiOI@AgI for water decontamination with visible light irradiation: Different mechanisms for different organic pollutants degradation and bacterial disinfection
作者: Liang J. ; Liu F. ; Li M. ; Liu W. ; Tong M.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 137 起始页码: 120
结束页码: 129
语种: 英语
英文关键词: Active species
; Bacterial disinfection
; Degradation kinetics of RhB and BPA
; Fe3O4@BiOI@AgI
; Photocatalytic activity
; Reusability
Scopus关键词: Bismuth compounds
; Degradation
; Density functional theory
; Design for testability
; Disinfection
; Escherichia coli
; Iron oxides
; Irradiation
; Light
; Organic pollutants
; Photocatalysis
; Photocatalysts
; Photodegradation
; Pollution
; Reaction intermediates
; Reusability
; Rhodium compounds
; Silver compounds
; Silver halides
; Water treatment
; Active species
; Degradation intermediates
; Degradation kinetics
; Emerging organic contaminants
; Fe3O4@BiOI@AgI
; Photo catalytic degradation
; Photocatalytic activities
; Superparamagnetic property
; Water pollution
; 4,4' isopropylidenediphenol
; iodide
; magnetite nanoparticle
; organic compound
; rhodamine B
; scavenger
; silver
; benzhydryl derivative
; bismuth
; magnetite
; phenol derivative
; rhodamine
; silver derivative
; silver iodide
; bacterium
; biodegradation
; catalysis
; chemical compound
; chemical reaction
; detection method
; disinfection
; dye
; experimental study
; microbial activity
; organic pollutant
; oxidation
; pollutant removal
; purification
; scavenger
; solar radiation
; water treatment
; Article
; controlled study
; decontamination
; degradation
; degradation kinetics
; density functional theory
; disinfection
; Escherichia coli
; high performance liquid chromatography
; irradiation
; oxidation
; photocatalysis
; photosensitization
; priority journal
; synthesis
; ultraviolet spectrophotometry
; visible light irradiation
; water decontamination
; water pollutant
; catalysis
; chemistry
; decontamination
; disinfection
; drug effect
; light
; procedures
; radiation response
; water management
; water pollutant
; Bacteria (microorganisms)
; Escherichia coli
; Negibacteria
; Benzhydryl Compounds
; Bismuth
; Catalysis
; Decontamination
; Disinfection
; Escherichia coli
; Ferrosoferric Oxide
; Iodides
; Light
; Phenols
; Rhodamines
; Silver Compounds
; Water Pollutants, Chemical
; Water Purification
英文摘要: Magnetic Fe3O4@BiOI@AgI (FBA) spheres were synthesized through a multi-step process. The fabricated photocatalysts were characterized by different techniques. To testify the visible light driven photocatalytic activity of FBA, Rhodamine B and Bisphenol A were chosen as model common and emerging organic contaminants, respectively. While, gram-negative strain Escherichia coli was selected as model waterborne bacteria. The results showed that under visible light irradiation, FBA contained strong photocatalytic degradation capacity towards both RhB and BPA. Moreover, FBA was also found to exhibit excellent disinfection activity towards E. coli. The photocatalytic mechanisms for different pollutants by FBA were determined and found to vary for different pollutants. Specifically, scavenger experiments, degradation intermediates determination, as well as theoretical density functional theory (DFT) analysis showed that RhB and BPA were degraded via photosensitization (dominated by e- and ·O2 −) and direct photocatalytic oxidation (contributed by h+, e- and ·O2 −), respectively. Whereas, E. coli cells yet were found to be inactivated by the generation of e- and ·O2 − rather than by the released Ag+. Since it contained superparamagnetic property, FBA could be easily separated from the reaction suspension after use. Due to the excellent photo stability, FBA exhibited strong photocatalytic activity in the fourth reused recycle. Therefore, FBA could serve as a promising alternative for water purification. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112825
Appears in Collections: 气候减缓与适应
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作者单位: The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
Recommended Citation:
Liang J.,Liu F.,Li M.,et al. Facile synthesis of magnetic Fe3O4@BiOI@AgI for water decontamination with visible light irradiation: Different mechanisms for different organic pollutants degradation and bacterial disinfection[J]. Water Research,2018-01-01,137