A Simple and Facile Glucose Biosensor Based on Prussian Blue Modified Graphite String

Table 1

Comparison of the analytical performance characteristics of the string-based glucose biosensor with other Prussian blue modified electrode.

Electrode	PB modification method	Sensitivity; (µA·mM^−1·cm^−2)	Linear range; (mM)	LOD; (µM)	Response time (sec)	References
Chi/GOx/PB-G; string electrode	Dipping	641.3	0.03~1.0	10	<3	This work
GOx/Chi-PB/Chi-Au electrode	Electrodeposition	—	0.002~0.4	0.4	<10	[10]
GO-GCE/PB/GOx/Chitosan	Electropolymerization	408.7	0.005~1.2	0.12	<5	[11]
GOx/PB-FCNF/GCE	Chemical process and casting	35.94	0.02~12	50	5	[12]
GOx/Ferri-COs-; SPCEs	Drop-coating	0.677; (µA·mM^−1)	~33.3	1380	<20	[13]

PB: Prussian blue; GOx: glucose oxidase; Chi: chitosan; GO: graphene oxide; GCE: glassy carbon electrode; PB-FCNF: Prussian blue nanostructures/carboxylic group-functionalized carbon nanofiber nanocomposites; Ferri-COs: hexacyanoferrate (III) mixed with chitosan oligomers; SPCE: screen printed carbon electrode.