DOI: 10.1016/j.watres.2017.12.062
Scopus记录号: 2-s2.0-85039998122
论文题名: Surface modified TiO2 floating photocatalyst with PDDA for efficient adsorption and photocatalytic inactivation of Microcystis aeruginosa
作者: Wang X. ; Wang X. ; Zhao J. ; Song J. ; Su C. ; Wang Z.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 131 起始页码: 320
结束页码: 333
语种: 英语
英文关键词: Floating photocatalyst
; Microcystin-LR
; Microcystis aeruginosa
; PDDA
; TiO2
Scopus关键词: Adsorption
; Algae
; Animals
; Bacteria
; Catalysts
; Chlorine compounds
; Efficiency
; Eutrophication
; Irradiation
; Lake pollution
; Light
; Molecules
; Photocatalysts
; Remediation
; Titanium dioxide
; Toxic materials
; Water pollution
; Dimethyldiallylammonium chloride
; Microcystin-LR
; Microcystis aeruginosa
; Multi-functional materials
; PDDA
; Photo catalytic degradation
; Photocatalytic inactivations
; TiO2
; Titanium compounds
; 2 propanol
; ammonium chloride
; benzoquinone
; chlorophyll a
; heptapeptide
; microcystin LR
; poly dimethyl diallyl ammonium chloride
; reactive oxygen metabolite
; scavenger
; titanium dioxide
; triethanolamine
; unclassified drug
; activation energy
; adsorption
; ammonium
; bioaccumulation
; catalyst
; chloride
; concentration (composition)
; cyanobacterium
; eutrophication
; irradiation
; lake water
; oxide group
; pollutant removal
; Article
; catalyst
; comparative study
; concentration process
; controlled study
; degradation kinetics
; harmful alga
; irradiation
; light absorption
; Microcystis aeruginosa
; microtechnology
; nonhuman
; photocatalysis
; physical chemistry
; priority journal
; structure analysis
; surface area
; synthesis
; water pollution
; algae
; Animalia
; Cyanobacteria
; Microcystis aeruginosa
英文摘要: Microcystis aeruginosa, as the most common cyanobacteria, often grows uncontrollably in eutrophic lakes with the accumulation of microcystin-LR (MC-LR) in water, which heavily pollutes water and hence imposes tremendous threat to aquatic animals and human beings. To remediate the harmful algae polluted water, here we synthesize a series of poly dimethyl diallyl ammonium chloride (PDDA) modified TiO2 floating photocatalysts, PDDA@NPT-EGC, and apply them as a visible light driven multifunctional material. The fabricated PDDA@NPT-EGC composites have a worm-like structure with PDDA particles distributed on their surfaces, and the concentration of PDDA can affect the agglomerative condition and distribution of PDDA particles and the photoelectric properties of catalysts. Among these catalysts, the PDDA@NPT-EGC with 0.2 wt% PDDA (0.2PDDA@NPT-EGC) shows the highest adsorption and photocatalytic activity. Compared with the NPT-EGC, the dark adsorption efficiency for the 0.2PDDA@NPT-EGC after 3 h increases from 70.4% to 88.9%, and the total removal efficiency after visible light irradiation for 2 h increases from 77.8% to 92.6%. In addition, the 0.2PDDA@NPT-EGC exhibits a removal efficiency of 96.55% for photocatalytic degradation of MC-LR after irradiation for 3 h. The Adda side chain of MC-LR molecule is found to degradate gradually in the photocatalytic degradation process, indicative of the elimination of biotoxicity for MC-LR molecule in the reaction. We demonstrate that the 0.2PDDA@NPT-EGC is remarkably competitive in both algae inactivation and MC-LR removal, which shall hold substantial promise in remediation of algae pollution in eutrophic waters. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113000
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, College of Environmental Science and Engineering, Tongji University, Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; SZU-NUS Collaborative Innovation Center for Optoelectronics Science and Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China; International Iberian Nanotechnology Laboratory (INL), Avenida Mestre Jose Veiga, Braga, 4715-330, Portugal
Recommended Citation:
Wang X.,Wang X.,Zhao J.,et al. Surface modified TiO2 floating photocatalyst with PDDA for efficient adsorption and photocatalytic inactivation of Microcystis aeruginosa[J]. Water Research,2018-01-01,131