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Electrode process of diethyldithiocarbamate on surface of pyrrhotite

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Abstract

The electrode process of diethyldithiocarbamate on the surface of pyrrhotite was studied using systematic electrochemical analysis, including cyclic voltammetry, chronopotentiometry and galvanostatic. Experimental results show that tetraethylthioram disulphide (TETD) is electrodeposited on pyrrhotite electrode surface in the presence of 1.0×10−4 mol/L diethyldithiocarbamate when the electrode potential is higher than 0.25 V. The electrochemical kinetics parameters of the electrode process of diethyldithiocarbamate on surface of pyrrhotite are calculated as follows: the exchange current density is 2.48 µA/cm2, and the transmission coefficient is 0.46. The electrodeposition includes two steps electrochemical reaction. The first reaction is electrochemical adsorption of diethyldithiocarbamate ion, then the adsorbed ion associates with a diethyldithiocarbamate ion from the solution and forms tetraethylthioram disulphide on the surface of pyrrhotite.

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Authors and Affiliations

  1. School of Resources Processing and Bioengineering, Central South University, 410083, Changsha, China

    Li Wei-zhong, Qin Wen-qing (Professor) & Qiu Guan-zhou

  2. General Research Institute for Nonferrous Metals, 100088, Beijing, China

    Dong Qing-hai

Authors
  1. Li Wei-zhong
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  2. Qin Wen-qing
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  3. Qiu Guan-zhou
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  4. Dong Qing-hai
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Correspondence to Qin Wen-qing.

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Foundation item: Project (50204013) supported by the National Natural Science Foundation of China

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Li, Wz., Qin, Wq., Qiu, Gz. et al. Electrode process of diethyldithiocarbamate on surface of pyrrhotite. J Cent. South Univ. Technol. 12, 416–419 (2005). https://doi.org/10.1007/s11771-005-0174-y

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  • DOI: https://doi.org/10.1007/s11771-005-0174-y

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