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DOI10.1021/es5020828
Interactions of Graphene Oxide Nanomaterials with Natural Organic Matter and Metal Oxide Surfaces
Chowdhury, Indranil1; Duch, Matthew C.2,3,4; Mansukhani, Nikhita D.2,3,4; Hersam, Mark C.2,3,4; Bouchard, Dermont5
发表日期2014-08-19
ISSN0013-936X
卷号48期号:16页码:9382-9390
英文摘要

Interactions of graphene oxide (GO) nanomaterials with natural organic matter (NOM) and metal oxide surfaces were investigated using a quartz crystal microbalance with dissipation monitoring (QCM-D). Three different types of NOM were studied: Suwannee River humic and fulvic acids (SRHA and SRFA) and alginate. Aluminum oxide surface was used as a model metal oxide surface. Deposition trends show that GO has the highest attachment on alginate, followed by SRFA, SRHA, and aluminum oxide surfaces, and that GO displayed higher interactions with all investigated surfaces than with silica. Deposition and release behavior of GO on aluminum oxide surface is very similar to positively charged poly-L-lysine-coated surface. Higher interactions of GO with NOM-coated surfaces are attributed to the hydroxyl, epoxy, and carboxyl functional groups of GO; higher deposition on alginate-coated surfaces is attributed to the rougher surface created by the extended conformation of the larger alginate macromolecules. Both ionic strength (IS) and ion valence (Na+ vs Ca2+) had notable impact on interactions of GO with different environmental surfaces. Due to charge screening, increased IS resulted in greater deposition for NOM-coated surfaces. Release behavior of deposited GO varied significantly between different environmental surfaces. All surfaces showed significant release of deposited GO upon introduction of low IS water, indicating that deposition of GO on these surfaces is reversible. Release of GO from NOM-coated surfaces decreased with IS due to charge screening. Release rates of deposited GO from alginate-coated surface were significantly lower than from SRHA and SRFA-coated surfaces due to trapping of GO within the rough surface of the alginate layer.


语种英语
WOS记录号WOS:000340701800054
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/59060
作者单位1.Natl Res Council Res Associate, Athens, GA 30605 USA;
2.Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA;
3.Northwestern Univ, Dept Chem, Evanston, IL 60208 USA;
4.Northwestern Univ, Dept Med, Evanston, IL 60208 USA;
5.US EPA, Natl Exposure Res Lab, Ecosyst Res Div, Athens, GA 30605 USA
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GB/T 7714
Chowdhury, Indranil,Duch, Matthew C.,Mansukhani, Nikhita D.,et al. Interactions of Graphene Oxide Nanomaterials with Natural Organic Matter and Metal Oxide Surfaces[J]. 美国环保署,2014,48(16):9382-9390.
APA Chowdhury, Indranil,Duch, Matthew C.,Mansukhani, Nikhita D.,Hersam, Mark C.,&Bouchard, Dermont.(2014).Interactions of Graphene Oxide Nanomaterials with Natural Organic Matter and Metal Oxide Surfaces.ENVIRONMENTAL SCIENCE & TECHNOLOGY,48(16),9382-9390.
MLA Chowdhury, Indranil,et al."Interactions of Graphene Oxide Nanomaterials with Natural Organic Matter and Metal Oxide Surfaces".ENVIRONMENTAL SCIENCE & TECHNOLOGY 48.16(2014):9382-9390.
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