Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (03): 589-594.doi: 10.3866/PKU.WHXB20100301
• ELECTROCHEMISTRY •
MA Chun-An, ZHOU Ya-Ming, XU Ying-Hua, JIANG Huan-Huan, LI Shan-Shan
Fe-triethonolamine (Fe-TEA) complexes as mediator are well suitable for the indirect reduction of indigo. In our work, the reduction of indigo was investigated in a Fe-TEA systemby cyclic voltammetry (CV). The electrocatalytic performance of four kinds of cathode materials (graphite, silver, nickel, and stainless steel) for the reduction of Fe(III)-TEA was compared. Further experiments were carried out to compare the effects of operating parameters including temperature, current, concentrations of NaOH and Fe(III)-TEA. Experimental results showed that this new route was feasible for the production of water-soluble indigo. A high current efficiency (44.7%) was achieved using optimized conditions and the concentration of the Fe(III)-TEA mediator was found to be the main influence. A new indigo radical mediator was formed during electrolysis and under certain condition, the effect of this indigo radical on the current efficiency was larger than that of Fe(III)-TEA.
Indirect electrochemical reduction
MA Chun-An, ZHOU Ya-Ming, XU Ying-Hua, JIANG Huan-Huan, LI Shan-Shan. Indirect Electrochemical Reduction of Indigo Using Fe-Triethonolamine[J].Acta Phys. -Chim. Sin., 2010, 26(03): 589-594.
Add to citation manager EndNote|Reference Manager|ProCite|BibTeX|RefWorks