Graphene@activated carbon modified electrode for electrochemical behavior analysis of quercetin

Abstract

Abstract In this paper, graphene (Gr) and coconut shell activated carbon (AC) modified electrode was developed for electrochemical behavior analysis of quercetin. Porous AC was prepared from coconut shell. The Gr was obtained by electrodeposition of graphite oxide on AC surface. The electrochemical behavior of quercetin was analyzed by Gr@AC electrode, and results show that the detection range of quercetin is 6 μmol/L to 100 μmol/L (R2=0.9977). The detection limit (LOD) is 0.5 nmol/L (3σ/slope), and the recommended method has a good recovery for the detection of quercetin in real urine.