Based on our results, we found that the composite films modified electrodes showed well reversible redox behaviors of viologen, high stability and reproduction in the electrolyte solutions.

• 结果表明，碳纳米管-紫精复合薄膜修饰的电极具有良好的紫精的氧化还原特性，并且有很好的稳定性和可重复性。