Abstract
The PET suspended single graphene nanopore (G/PET) was produced by heavy ion irradiation and asymmetric chemical etching. The solutions of NiSO4, NiCl2, CuSO4 and CuCl2 with different concentration were adopted to study the transport properties of bivalent ion in single G/PET nanopore by measuring the I–V curves. The perfect “diode effect” and excellent rectification effect of G/PET nanopore were observed, and the huge rectification ratio up to 43.3 was obtained in NiSO4 solution. The great solution selectivity and ion current magnification effect of graphene/PET nanopore were also confirmed in our study.
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