聚硫堇/石墨烯复合材料修饰电极对NADH的电催化氧化研究

Grapheme functionalized with poly thionine for electrochemical determination of nicotinamide adenine dinucleotide

采用循环伏安法将硫堇在石墨烯修饰的玻碳电极表面聚合,得到了一种新的聚硫堇/石墨烯修饰电极,此电极兼备了石墨烯和聚硫堇的特性.实验表明:该修饰电极能有效降低NADH的过电位;对NADH的检测范围为2.4×10^(-6)~4.89×10^(-3) mol·L^(-1);检出限为6.826×10^(-7) mol·L^(-1);对尿酸和抗坏血酸的干扰有很好的消除作用;此电极稳定性、重现性较好,有很高的实际应用价值.

A new poly thionine functionalized graphene moddified electrodes was presented by using cyclic voltammetry. The results showed effectively reduce the overpotential of DANH, and the detection range of 2.4×10-（-6）-4.89×10-（-3） mol·L-（-1）. The corresponding limit is 6.826×10-（-7） mol·L-（-1）.In addition, the sensor showed good reproducibility and stability.