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Citation: MA Chun-An, ZHOU Ya-Ming, XU Ying-Hua, JIANG Huan-Huan, LI Shan-Shan. Indirect Electrochemical Reduction of Indi Using Fe-Triethonolamine[J]. Acta Physico-Chimica Sinica, ;2010, 26(03): 589-594. doi: 10.3866/PKU.WHXB20100301 shu

Indirect Electrochemical Reduction of Indi Using Fe-Triethonolamine

1.
State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials, Zhejiang University of Technology, Hangzhou 310032, P. R. China

Received Date: 16 September 2009
Available Online: 12 January 2010

Fe-triethonolamine (Fe-TEA) complexes as mediator are well suitable for the indirect reduction of indi . In our work, the reduction of indi 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 indi . 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 indi radical mediator was formed during electrolysis and under certain condition, the effect of this indi radical on the current efficiency was larger than that of Fe(III)-TEA.
- Electrochemical dyeing,
- Indi ,
- Vat dye,
- Indirect electrochemical reduction
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