Corrosive electrochemistry of jamesonite by cyclic voltammetry①
来源期刊：中南大学学报(英文版)2004年第3期
论文作者：余润兰 胡岳华 邱冠周 覃文庆
文章页码：286 - 290
Key words：jamesonite; corrosive electrochemistry; voltammetry
Abstract: The corrosive electrochemistry of jamesonite was studied by cyclic voltammetry. Every peak in voltammograms was identified through thermodynamic calculation. The results show an irreversible electrode process by the strong adsorption of oxidation elemental sulfur on jamesonite. A deficient-metal and sulfur-rich compound is formed under the potential of 80 mV at pH6.86. The passive action by elemental sulfur occurs from 80 to 470 mV and S2O2-3, SO2-4 are produced at potential over 470 mV. The anodic peak producing SO2-4 is inhibited due to the deposition of PbSO4 at higher potential in Na2SO4 solution. The corrosive action of jamesonite becomes strong and the redox characterization similar to PbS, FeS and Sb2S3 appears at pH9.18.
