Electrode process of diethyldithiocarbamate on surface of pyrrhotite①
来源期刊：中南大学学报(英文版)2005年第4期
论文作者：黎维中 覃文庆 邱冠周 董清海
文章页码：416 - 419
Key words：electrode process; pyrrhotite; diethyldithiocarbamate
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 1.0×10-4mol/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 2.48μA/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.
