Graphene from Sugarcane Bagasse for Nonenzymatic Electrochemical Determination of Glucose

Abstract

Graphene prepared from sugarcane bagasse was utilized to fabricate an electrode for the electrochemical determination of glucose under non-enzymatic conditions. Sugarcane bagasse was pyrolyzed at relatively low temperatures to produce graphene, which was used as electrode material for glucose sensing using cyclic voltammetry (CV) and amperometry (AMP). The CV results demonstrated that the fabricated graphene electrode showed good linearity in the glucose concentration range of 50-900 mg/L with a sensitivity value of 10.352 μAM−1cm−2 and a detection limit of 1.13 μM at pH 5.2. The efficiency and selectivity of the electrode were evaluated by amperometry studies in three real samples, viz. apple juice, coco-cola, and honey, where the glucose concentration was found to be 1.88%, 4.2%, and 40.75%, respectively, compared with those available in the literature. Further, the electrode showed a rapid response of 6s and possessed stability of 87.5% of the initial value up to 15 days. Thus, it was suggested that the synthesized graphene from bagasse fibers can act as an efficient electrode material for the electrochemical determination of glucose. It can also be explored for other sensing applications under non-enzymatic conditions.