Skip to main content

Table 2 Influence of morphology, defects and conductivity on electron transfer properties of electrochemical biosensors based on graphene and graphene composites

From: Impact of nano-morphology, lattice defects and conductivity on the performance of graphene based electrochemical biosensors

Electrode platform

Morphology

Carbon to Oxygen ratio [%]

ID/IG ratio

Charge transfer resistance (Rct [Ω])

Surface area [cm2]

Peak-to-peak potential (ΔEp [mV])

Heterogenous electron transfer rate constant [cm/s]

Capacitance (µF/cm2)

References

Gr-HPHT diamond

Island-like surface structure

N/A

0.29

400

0.0183

N/A

N/A

N/A

[115]

Thi-rGO/GCE

Flake-like shape with slight wrinkles

1.654

Higher than GO

33.41

N/A

N/A

N/A

N/A

[116]

Au-rGO-AuPtNP

Bended sheets of graphene

N/A

1.02

N/A

N/A

80

N/A

N/A

[117]

ERGO-GCE

High degree of wrinkles

N/A

1.80

Decreases compared to GO

N/A

N/A

N/A

N/A

[118]

Anodized epitaxial graphene (EG)

Defects generated on anodized EG surface

Decreased by anodization

Increased by anodization

N/A

N/A

81

0.00981 in [Ru(NH3)6]3+/2+ 0.00101 in [Fe(CN)6]3−/4−

5.55 at 0.25 V

[58]

CRGO/GCE

Curly with 100 nm thickness and 0.8 nm single sheet

0.117

1.38

160.8

0.092

N/A

N/A

N/A

[106]

Back to article page

Journal of Nanobiotechnology

ISSN: 1477-3155

Contact us