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DOI | 10.1021/acs.est.5b00654 |
Multiwalled Carbon Nanotube Dispersion Methods Affect Their Aggregation, Deposition, and Biomarker Response | |
Chang, Xiaojun1; Henderson, W. Matthew2; Bouchard, Dermont C.2 | |
发表日期 | 2015-06-02 |
ISSN | 0013-936X |
卷号 | 49期号:11页码:6645-6653 |
英文摘要 | To systematically evaluate how dispersion methods affect the environmental behaviors of multiwalled carbon nanotubes (MWNTs), MWNTs were dispersed in various solutions (e.g., surfactants, natural organic matter (NOM), and etc.) via ultrasonication (SON) and long-term stirring (LT). The two tested surfactants [anionic sodium dodecyl sulfate (SDS) and nonionic poly(ethylene glycol)poly(propylene glycol)poly(ethylene glycol) (PEO-PPO-PEO) triblock copolymers (Pluronic)] could only disperse MWNTs via ultrasonication; while stable aqueous SON/MWNT and LT/MWNT suspensions were formed in the presence of the two model NOMs (Suwannee river humic acid and fulvic acid). Due to the inherent stochastic nature for both methods, the formed MWNT suspensions were highly heterogeneous. Their physicochemical properties, including surface charge, size, and morphology, greatly depended upon the dispersant type and concentration but were not very sensitive to the preparation methods. Aggregation and deposition behaviors of the dispersed MWNTs were controlled by van der Waal and electrostatic forces, as well as other non-DLVO forces (e.g., steric, hydrophobic forces, etc.). Unlike the preparation method-independent physicochemical properties, LT/NOM-MWNTs and SON/NOM-MWNTs differed in their fathead minnow epithelial cell metabolomics profiles. |
语种 | 英语 |
WOS记录号 | WOS:000355779100036 |
来源期刊 | ENVIRONMENTAL SCIENCE & TECHNOLOGY |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/57399 |
作者单位 | 1.Natl Acad Sci, Natl Res Council, Washington, DC 20418 USA; 2.Natl Exposure Res Lab, USEPA Off Res & Dev, Athens, GA 30605 USA |
推荐引用方式 GB/T 7714 | Chang, Xiaojun,Henderson, W. Matthew,Bouchard, Dermont C.. Multiwalled Carbon Nanotube Dispersion Methods Affect Their Aggregation, Deposition, and Biomarker Response[J]. 美国环保署,2015,49(11):6645-6653. |
APA | Chang, Xiaojun,Henderson, W. Matthew,&Bouchard, Dermont C..(2015).Multiwalled Carbon Nanotube Dispersion Methods Affect Their Aggregation, Deposition, and Biomarker Response.ENVIRONMENTAL SCIENCE & TECHNOLOGY,49(11),6645-6653. |
MLA | Chang, Xiaojun,et al."Multiwalled Carbon Nanotube Dispersion Methods Affect Their Aggregation, Deposition, and Biomarker Response".ENVIRONMENTAL SCIENCE & TECHNOLOGY 49.11(2015):6645-6653. |
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