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电化学  2014 

Pt/DNA-MWCNTs/GC电极制备及其H2O2还原的电催化活性

DOI: 10.13208/j.electrochem.131165, PP. 459-464

Keywords: DNA,功能化,多壁碳纳米管,Pt,H2O2检测

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Abstract:

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0.04~18.07mmol·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.

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