▎ 摘　　要

NOVELTY - Nano-composite material comprises gold nanoparticles, graphene-flower-shaped molybdenum disulfide nano-sheet composite material, where the nano-composition material is loaded on the surface of the graphene flower. USE - Nano-composite material for electrochemical impedance biosensor (claimed), used in cell biology, cancer research, drug screening and environmental safety monitoring field. ADVANTAGE - The nano-composite material has high purity, uniform appearance, controllable grain diameter, large specific surface area, good conductivity, good physical and chemical stability, green and safe, simple steps, high efficiency and fast, and can be produced in large scale. The electrochemical impedance sensor has high sensitivity and strong specificity, can be widely applied to cell biology, cancer detection product, drug screening and environment monitoring. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparation of nano-composite material; and an electrochemical impedance sensor.