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ID 114226
Author
Becchaku, Yuta Tokushima University
Tomiyama, Yuki Tokushima University
Keywords
Graphene
affinity capillary electrophoresis
sodium dodecylbenzenesulfonate
polyethylene glycol
effective electrophoretic mobility
number of theoretical plates
Content Type
Journal Article
Description
Water-soluble nonionic polymers of polyethylene glycol (PEG), poly(vinyl alcohol) (PVA), and polyvinylpyrrolidone (PVP) were examined to develop the dispersion of graphene in an aqueous surfactant solution. Sodium dodecylbenzenesulfonate was used as an anionic surfactant to disperse graphene in an aqueous solution and to give negative charge on it. The dispersion of graphene was monitored through the electropherograms in affinity capillary electrophoresis; a broad peak for the dispersed graphene and shot signals for the aggregated one. When PEG was added in the separation buffer as an affinity reagent, the number of the shot signals in the electropherogram was reduced; PEG can develop the dispersion of graphene in an aqueous surfactant solution. The dispersion was also developed with PVP or PVA. The effective electrophoretic mobility of the dispersed graphene was reduced by using the polymer as an affinity reagent. The result suggested that the anionic surfactant on the graphene surface was competitively substituted with the nonionic polymer. The degree of the decrease in the effective electrophoretic mobility was larger with PEG with a high-molecular mass. The broad peak of the dispersed graphene got narrower by the addition of PEG, and the number of theoretical plates was improved.
Journal Title
Analytical Sciences
ISSN
13482246
09106340
NCID
AA10500785
Publisher
The Japan Society for Analytical Chemistry
Volume
35
Issue
3
Start Page
307
End Page
313
Published Date
2019-03-10
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Publisher
departments
Science and Technology