Zhou Xinfei, He Kunyun, Wang Yu, Zheng Haitao, Suye Shin-ichiro
School of Environmental and Chemical Engineering, Tianjin Polytechnic University.
Anal Sci. 2015;31(5):429-36. doi: 10.2116/analsci.31.429.
A new composite film-modified electrode was prepared by the electropolymerisation of poly(3,4-ethylenedioxythiophene) (PEDOT) and superconductive carbon black (SCB) on a gold electrode. The PEDOT-SCB/Au electrode exhibited excellent ability towards the electrocatalytic oxidation of ascorbic acid, in terms of a 480 mV shift of the oxidation potential in the negative direction, and a dramatically enhanced oxidation current. Under the optimum conditions, the amperometric detection of ascorbic acid provided a wide linear detection range from 1.0 × 10(-7) to 8.0 × 10(-4) M, and a detection limit of 5.0 × 10(-8) M (S/N = 2) as well as good reproducibility and stability.
通过在金电极上对聚（3,4 - 乙撑二氧噻吩）（PEDOT）和超导炭黑（SCB）进行电聚合制备了一种新型复合膜修饰电极。PEDOT - SCB/Au电极在抗坏血酸的电催化氧化方面表现出优异的性能，氧化电位向负方向移动了480 mV，并且氧化电流显著增强。在最佳条件下，抗坏血酸的安培检测提供了从1.0×10⁻⁷到8.0×10⁻⁴ M的宽线性检测范围，检测限为5.0×10⁻⁸ M（S/N = 2），以及良好的重现性和稳定性。
