High stability of few layer graphene nanoplatelets in various solvents
KAUST DepartmentComposite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
Online Publication Date2017-04-25
Print Publication Date2017-04
Permanent link to this recordhttp://hdl.handle.net/10754/623325
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AbstractDispersion of few-layer graphene nanoplatelets (GNPs) in liquid media is a crucial step for various applications. Here, we highlight a simple, nondestructive method for preparing stable aqueous colloidal solutions with GNP powder quickly dispersed in 5 wt.% sodium–hypochlorite- (NaClO) and sodium-bromide- (NaBr) salted solvent by bath sonication. This method makes it possible to easily prepare a highly concentrated colloidal solution (1 mgcenterdotml−1) of GNPs that can easily be re-dispersed in water (treated GNPs). The aqueous suspension we prepared remained stable for longer than a few weeks. We made similar tests with various solvents and dispersibility appeared to decrease with decreasing polarity. High-concentration suspensions using our facile dispersion method could be of particular interest to the large community using graphene for a diversity of applications.
CitationXu X, Zhou J, lubineau G (2017) High stability of few layer graphene nanoplatelets in various solvents. IOP Conference Series: Materials Science and Engineering 191: 012015. Available: http://dx.doi.org/10.1088/1757-899x/191/1/012015.
SponsorsThis research was supported by King Abdullah University of Science and Technology.
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