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利用长链离子液体特殊的性质,用其固定葡萄糖氧化酶(GOx)于Au/石墨烯电极表面组装成Nafion/GOx/[C10-mim+]Br-/Au/Gr修饰电极,然后用其测定葡萄糖。用透射电镜表征氧化石墨烯和Au/氧化石墨烯的形貌发现,金纳米颗粒很均匀的分散在石墨烯表面,并不存在团聚现象。电化学数据显示,Nafion/GOx/[C10-mim+]Br-/Au/Gr修饰电极对葡萄糖具有很好的催化作用,葡萄糖浓度在6.0×10-5~2×10-3mol/L范围内呈良好的线性关系(R=0.997),检出限为1.6×10-5mol/L。
The immobilized glucose oxidase (GOx) was used to assemble Nafion / GOx / [C10-mim +] Br- / Au / Gr modified electrodes on the surface of Au / graphene electrodes by using the special properties of long chain ionic liquids. . The morphology of graphene oxide and Au / graphene oxide was characterized by transmission electron microscopy. It was found that the gold nanoparticles were uniformly dispersed on the surface of graphene without agglomeration. Electrochemical data showed that the Nafion / GOx / [C10-mim +] Br- / Au / Gr modified electrode had a good catalytic effect on glucose, glucose concentration in the range of 6.0 × 10-5 ~ 2 × 10-3mol / L Good linear relationship (R = 0.997), the detection limit of 1.6 × 10-5mol / L.