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二氧化硅和金或铂组成的复合纳米颗粒可以大幅度地提高葡萄糖生物传感器的电流响应 ,其效果明显优于这三种纳米颗粒单独使用时对葡萄糖生物传感器的增强作用。除了具有吸附浓缩效应、吸附定向和量子尺寸颗粒效应外 ,复合纳米颗粒比单独一种纳米颗粒更易于形成连续势场 ,降低电子在电极和固定化酶间的迁移阻力 ,提高电子迁移率 ,有效地加速了酶的再生过程 ,因此复合纳米颗粒显著增强了传感器电流响应
The composite nanoparticles composed of silica and gold or platinum can greatly improve the current response of the glucose biosensor, and the effect is obviously better than that of the glucose biosensor when the three kinds of nanoparticles are used alone. In addition to adsorption and concentration effects, adsorption orientation and quantum size particle effects, the composite nanoparticles are more likely to form a continuous potential field than a single nanoparticle, reducing the migration resistance of the electrons between the electrode and the immobilized enzyme, increasing the electron mobility Accelerates the enzymatic regeneration process, so the composite nanoparticles significantly enhance the sensor current response