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Manganese Carbonate/Laser-Induced Graphene Composite for Glucose Sensing.

Amit K ThakurPrakash SengoduArvind H JadhavMahdi Malmali
Published in: ACS omega (2024)
Laser-induced graphene (LIG) has received great interest as a potential candidate for electronic and sensing applications. In the present study, we report the enhanced performance of a manganese carbonate-decorated LIG (MnCO 3 /LIG) composite electrode material employed for electrochemical glucose detection. Initially, the porous LIG was fabricated by directly lasing poly(ether sulfone) membrane substrate. Then, the MnCO 3 /LIG composite was synthesized via a hydrothermal method. Later, MnCO 3 /LIG was immobilized onto a glassy carbon electrode surface and employed for glucose detection. The structure of the MnCO 3 /LIG composite was carefully characterized. The influence of the MnCO 3 /LIG composite on the performance of the electrode was investigated using cyclic voltammetry curves. The MnCO 3 /LIG composite exhibited an excellent sensitivity of 2731.2 μA mM -1 cm -2 , and a limit of detection of 2.2 μM was obtained for the detection of glucose. Overall, the performance of the MnCO 3 /LIG composite was found to be superior to that of most of the MnCO 3 -based composites.
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