One-pot Synthesis of N-doped Reduced Graphene Oxide Decorated with Au-Pd@Au Alloy Nanodendrites for Electrochemical Detection of Chrysophanol

We demonstrate for the first time a new one-step effective route for the preparing of N-doped reduced graphene oxide loading with Au-Pd@Au (N-rGO-Au-Pd@Au) alloy nanodendrites. Then the prepared N-rGO-Au-Pd@Au alloy nanodendrites were used to fabricate a sensitive electrochemical sensor for chrysophanol. The reaction mechanism of chrysophanol on the N-rGO-Au-Pd@Au alloy nanodendrites modified glass carbon electrode was thoroughly investigated by cyclic voltammetry. The impact conditions were optimized by differential pulse voltammetry (DPV). The results showed that the sensor proved high electrocatalytic activity for the determination of chrysophanol. The linear range of chrysophanol is 1.84-84.5 μg mL-1 with the detection limit of 0.58 μg mL-1. It is note that the proposed electrochemical sensor was successfully employed to detect real sample. This work may provide an effective analytical platform for determination of chrysophanol in biochemical, pharmaceutical, and clinical research.