Metal free electrochemical glucose biosensor based on N-doped porous carbon material

Reduced Graphene Oxide-Coated Silica Nanospheres as Flexible Enzymatic Biosensors for Detection of Glucose in Sweat

“…The influence of the redox peak currents on the scan rates was investigated in the range of 50–1000 mV s –1 (Figure A). Both the cathodic and the anodic peak currents are proportional to the scan rates as shown in Figure B, which indicates that electron transfer between GOx and rGO/SiO 2 /C-PDMS is primarily a surface-controlled process. , The amount of GOx immobilized on the electrode surface (Γ mol cm –2 ) can be estimated using the following formula where Q is the charge (C) calculated by peak integration, F is the Faraday constant (96 493 C mol –1 ), n is the number of electrons, and A (cm 2 ) is the electrode area. The estimated surface concentration of electroactive GOx was calculated to be 9.24 × 10 –11 mol cm –2 , which was higher than the theoretical value of monolayer GOx (2.86 × 10 –12 mol cm –2 ).…”

“…Both the cathodic and the anodic peak currents are proportional to the scan rates as shown in Figure 6B, which indicates that electron transfer between GOx and rGO/SiO 2 / C-PDMS is primarily a surface-controlled process. 3,43 The amount of GOx immobilized on the electrode surface (Γ mol cm −2 ) can be estimated using the following formula 42…”

Recent progress in the development of porous carbon-based electrodes for sensing applications

“…Several porous carbon materials have been employed to immobilize redox proteins and enzymes, where a paradigm of biospecies applies the use of glucose oxidase (GOD) immobilized on the porous carbon-based electrode surface towards glucose biosensing. 76–80 Recently, Shan and co-workers 81 reported an elegant biosensor based on a carbonaceous support for loading GOD enzymes. They prepared a carbonaceous material (named as 3D-CVS) by the carbonization of a dried cane vine stem from Wisteria plant, and a cylindrical morphology of carbon material with a three-dimensional micro-, macroporous structure was obtained.…”

Property Comparison of Transition‐Metal Dichalcogenides (MoS2, MoSe2 and MoTe2) and Their Applicability as Electrochemical Biosensors for Glucose Detection

“…Electrochemical biosensors have been considered as a particularly promising class owing to their exceptional performances include high sensitivity and selectivity, rapid response, low cost, simple instrumentation, easy miniaturization and good quantitative ability. [12][13][14][15] In particular, nanomaterials with unique electronic, catalytic properties, good stability and large specific surface area play key roles. [16,17] TMDs are good candidates of them ascribed to their outstanding physical and chemical properties.…”