Research Article

A SiO2 Hybrid Enzyme-Based Biosensor with Enhanced Electrochemical Stability for Accuracy Detection of Glucose

Figure 2

SEM images of (A) SiO2-CNTs, (B) SiO2-CNTs/THi, (C) SiO2-CNTs/THi/AuNPs, and (D) SiO2-CNTs/THi/AuNPs/GO composites at the same magnification. The scale bar represents 200 nm.