DOI: 10.1016/j.watres.2017.12.069
Scopus记录号: 2-s2.0-85039856373
论文题名: Influence of nanoparticle doping on the colloidal stability and toxicity of copper oxide nanoparticles in synthetic and natural waters
作者: Adeleye A.S. ; Pokhrel S. ; Mädler L. ; Keller A.A.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 132 起始页码: 12
结束页码: 22
语种: 英语
英文关键词: Copper oxide nanoparticle
; Environmental fate
; Natural waters
; Toxicity
; Transformation
Scopus关键词: Chemical stability
; Marine biology
; Nanoparticles
; Phytoplankton
; Semiconductor doping
; Sodium chloride
; Suspensions (fluids)
; Toxicity
; Van der Waals forces
; Water
; Copper oxide nanoparticles
; Critical coagulation concentration
; Engineered nanoparticles
; Environmental fate
; Environmental implications
; Natural waters
; Transformation
; Van der Waals attraction
; Copper oxides
; copper oxide nanoparticle
; cuprous ion
; fresh water
; iron
; sea water
; water
; copper
; cuprous oxide
; iron
; metal nanoparticle
; aggregation
; coagulation
; colloid
; concentration (composition)
; copper compound
; dissolution
; environmental fate
; iron
; nanoparticle
; oxide
; particle size
; physicochemical property
; toxicity
; transformation
; water treatment
; aqueous solution
; Article
; chemical engineering
; chemical interaction
; chemical reaction
; colloid
; concentration process
; density
; dissolution
; Isochrysis
; Isochrysis galbana
; leaching
; molecular stability
; nanotoxicology
; nonhuman
; pH
; priority journal
; sedimentation rate
; surface area
; synthesis
; chemistry
; drug effect
; Haptophyta
; particle size
; Isochrysis galbana
; Copper
; Fresh Water
; Haptophyta
; Iron
; Metal Nanoparticles
; Particle Size
; Seawater
英文摘要: Engineered nanoparticles (NPs) are often doped with other elements to improve their functionality and, at times, physical and/or chemical stability. However, the effect of doping on the environmental implications of NPs is not well-understood. We investigated the colloidal stability and effects of CuO NPs doped with Fe (0–10%). Colloidal stability of the Fe-doped CuO NPs in aqueous media, as determined by critical coagulation concentrations of NaCl, decreased with increased Fe-doping. However, decrease in the overall particle density led to slower sedimentation of Fe-doped CuO NPs than would have been predicted from their aggregation behavior. Fe-doping significantly affected CuO dissolution (p <.001), promoting Cu leaching out from the doped NPs due to increased reactivity at neutral pH and increased surface area with Fe-doping. Fe-doping did not increase the toxicity of CuO to a marine phytoplankton, Isochrysis galbana, despite promoting ionic Cu release. Total suspended Cu was dominated by dissolved Cu complexes in seawater and particulate Cu in freshwater. Based on the abundance of different size fractions analyzed in freshwater, the particles detected in water suspension were mostly (≥50%) larger than 200 nm in diameter. However, these large-sized particles are mainly composed of aggregated nanosized particles held together by van der Waals attraction. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112974
Appears in Collections: 气候减缓与适应
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作者单位: Bren School of Environmental Science & Management, University of CaliforniaCalifornia 93106−5131, United States; Foundation Institute of Materials Science (IWT), Department of Production Engineering, University of Bremen, Bremen, Germany; University of California Center for Environmental Implications of Nanotechnology, Santa Barbara, California, United States; National Research Council Research Associate, Atlantic Ecology Division, US Environmental Protection Agency, Narragansett, Rhode Island, United States
Recommended Citation:
Adeleye A.S.,Pokhrel S.,Mädler L.,et al. Influence of nanoparticle doping on the colloidal stability and toxicity of copper oxide nanoparticles in synthetic and natural waters[J]. Water Research,2018-01-01,132