Influence of Natural Organic Matter on Environmental Behavior of Carbon Nanotubes: A Review
WANG Peng1, ZHANG Di1, ZHANG Huang2, Ghosh Saikat1
1 Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming 650500;
2 Yunnan Institute of Food Safety, Kunming University of Science & Technology, Kunming 650500
Abstract: Rapid development of nanotechnology raises the possibility of imminent environmental release of carbon nanotubes (CNTs) due to their extensive production and usage. Enhanced hydrophobicity of CNTs promotes the strong interactions with orga-nic pollutants and natural organic matter (NOM). This paper reviews the environmental behavior of CNT in the presence of NOM, including the influence of NOM on CNTs dispersion and adsorption characteristics of organic pollutants. The “unzipping” and micelle coating have been reported as the prime dispersion mechanism depending on the physicochemical properties of NOM. The interactions between organic pollutants and dispersed CNTs by different dispersion mechanisms should be paid further attention to unveil under-lying adsorption mechanisms. Future research regarding direct measurement of CNTs surface area in the liquid phase and subsequent adsorption of organic pollutants may bring about a deeper insight to the complex environmental interactions.
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2017, Vol. 31 
