将DNA功能化多壁碳纳米管(MWCNTs)复合材料修饰于玻碳基底(GC)表面制得DNA-MWCNTs/GC电极,并在此基础上电沉积负载Pt纳米颗粒构建了一种新型无酶H2O2传感电极.利用扫描电子显微镜(SEM)表征制得的修饰电极,同时通过循环伏安法和计时电流法研究了该传感电极的H2O2响应性能.结果表明,该传感电极的H2O2检测在0.04~18.07 mmol·L-1浓度范围内成线性相关,检出限3.85μmol·L-1(S/N=3),且有良好的重现性、稳定性与选择性. The DNA-MWCNTs / GC electrode was prepared by modifying DNA-functionalized MWCNTs composite on the surface of glassy carbon (GC) substrate. On the basis of this, Pt nanoparticles were electrodeposited to construct a novel enzyme- H2O2 sensing electrode.The prepared modified electrode was characterized by scanning electron microscopy (SEM), and the H2O2 response performance of the sensing electrode was studied by cyclic voltammetry and chronoamperometry.The results showed that the sensing electrode H2O2 detection The linear range was 0.04 ~ 18.07 mmol·L-1 with the detection limit of 3.85μmol·L-1 (S / N = 3) and good reproducibility, stability and selectivity.