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Abstract
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Graphene is a new class of 2D carbon nanomaterials with one atom thickness. Graphene
quantum dots (GQDs), are graphene sheets that are smaller than 100 nm and has been emerged
as a significant research area in recent years (1). Recently some organic and inorganic materials
have been utilized for the stabilization of GQDs on the electrodes surface for sensing and
biosensing purposes (2). In this study 1-butyl-3-methylimidazolium hexafluorophosphate was
used as an ionic liquid (IL) for the stabilization of GQDs on the electrode surface. The resulted
ILs/GQDs modified electrode was studied with cyclic voltammetry and electrochemical
impedance spectroscopy (EIS) techniques. The electron transfer rate and electrocatalytic
performance of the prepared electrode was compared with GQDs and ILs modified electrodes.
The results was shown that the ILs/GQDs modified electrode have better electron transfer rate
and electrocatalytic performance than GQDs and ILs modified electrodes. Due to the unique
electron transfer ability of ILs and GQDs, and also stability of the fabricated ILs/GQDs modified
electrodes, it can be used in various electroanalytical purposes.
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