▎ 摘　　要

NOVELTY - A glucose sensor preparing method involves utilizing a graphene nano-wall as a load framework, and preparing the graphene nano-wall using plasma enhanced chemical vapor deposition, followed by heating copper foil under hydrogen, annealing heated copper foil under hydrogen, growing annealed copper foil under methane and hydrogen with radio frequency, transferring the graphene nano-wall to polyethylene terephthalate after cooling, screen printing three electrodes, surface-functionalizing the screen printed three electrodes and loading glucose oxidase onto three-dimensional graphene nano-wall. USE - Method for preparing a glucose sensor. ADVANTAGE - The method enables preparing the glucose sensor with high sensitivity, better reflecting linear response, suitable large-scale industrial production effect and better specificity, in a simple and inexpensive manner. DETAILED DESCRIPTION - A glucose sensor preparing method involves utilizing a graphene nano-wall as a load framework, and preparing the graphene nano-wall using plasma enhanced chemical vapor deposition, followed by heating copper foil at 500-800 degrees C for 30-90 minutes under 5-30 sccm hydrogen, annealing heated copper foil at 600-800 degrees C for 30-90 minutes under 5-15 sccm hydrogen, growing annealed copper foil at 600-800 degrees C for 60-120 minutes under 4:8 sccm methane and hydrogen with 200-500 mw radio frequency and closed radio and methane such that hydrogen is set to 2-20 sccm, transferring the graphene nano-wall to polyethylene terephthalate after cooling, screen printing three electrodes, surface-functionalizing the screen printed three electrodes and loading glucose oxidase onto three-dimensional graphene nano-wall to obtain glucose sensor.