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Investigation of electrochemical properties of printed glucose biosensor based on graphene ink
S.Mozayenani1, N.Gholamalizadeh2*, M. Abdos1, A.M. Bazargan1,3
1.Department of chemistry, Amirkabir university of technology, Tehran, Iran
2.New Technologies Research Center (NTRC), Amirkabir university of technology, Tehran, Iran
3.Kara Pazhuhesh Company Amirkabir, Tehran
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Abstract: The study of printed electronics is one of the important elements in the development of industrial productions. To achieve this, in the present study, a) an electrode based on conductive graphene ink was printed using a screen printing process, b) an air-curing condition was applied to graphene ink, and c) enzyme stabilization (using 3D graphene) and the electrochemical performance of the printed biosensor were investigated. This method of producing scalable biosensors has significant characteristics such as high sensitivity769.9 𝜇A.mM-1.cm-2 , and its linear range of 0.2 to 16 mM is suitable for human blood sugar monitoring in a short response time during a day. The results signified high selectivity against interfering species such as ascorbic acid and lactose, and high repeatability and reproducibility with low relative standard deviation values of 1.04% and 1.5%, respectively, for the device. No considerable reduction in the printed electrochemical biosensor (PEB) performance was observed after bending cycles of up to 100, indicating the high flexibility of the biosensor. The PEB presented a great potential to be used as a personalized health monitoring device in complex biological fluids.
Keywords: Printed Electronics, Graphene Conductive Ink, Glucose Biosensor, Flexible Biosensor.
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