Direct electrochemical reduction of a vat dye used in the dyeing process has been hindered by poor electron transfer between the solid electrode and insoluble dye particles. In this reported work, carbon felt was employed as a cathode for the direct electrochemical reduction of CI Vat Yellow 1 using cyclic voltammetry and electrolytic experiments. By monitoring the reaction products from the electrolysis reaction, the reaction mechanism of the direct electrochemical reduction of CI Vat Yellow 1 was delineated and it was found to be a two-step, two-electron reduction reaction. Electrochemical dyeing experiments at the laboratory scale were also performed. The results showed that carbon felt is an excellent electrode material for the direct electrochemical reduction of CI Vat Yellow 1. Electrochemical dyeing results showed that color shade and washing fastness of the dyed fabric were comparable to traditional dyeing methods.

固态电极与不溶性染料颗粒之间不良的电子转移阻碍了染色工艺中使用的还原染料的直接电化学还原。在这份报告的工作中，碳毡被用作阴极，用于使用循环伏安法和电解实验直接电化学还原CI Vat Yellow 1。通过监测来自电解反应的反应产物，描述了电化学还原CI Vat Yellow 1的反应机理，发现它是两步两电子还原反应。还进行了实验室规模的电化学染色实验。结果表明，碳毡是直接电化学还原CI Vat Yellow 1的极佳电极材料。