Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (17): 1707-1712. Previous Articles     Next Articles

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  1. (重庆大学资源及环境科学学院 西南资源开发与环境灾害控制工程教育部重点实验室 重庆 400044)
  • 收稿日期:2009-10-05 修回日期:2010-03-15 出版日期:2010-09-14 发布日期:2010-05-10
  • 通讯作者: 辜敏;
  • 基金资助:


Studies on the Influence of Sodium 3-Mercaptopropanesulphonate Additives on Copper Electrodeposition

ZHONG Qin, GU Min, LI Qiang   

  1. (Key Laboratory for the Exploitation of Sothwestern Resources and the Environmental Disaster Control Engineering, Ministry of Education, College of Resource and Environmental Science, Chongqing University, Chongqing 400044)
  • Received:2009-10-05 Revised:2010-03-15 Online:2010-09-14 Published:2010-05-10

The influence of sodium 3-mercaptopropanesulfonate (MPS) with different concentrations on the copper electrodeposition on a glass carbon electrode (GCE) from CuSO4-H2SO4 electrolytes was studied by using cyclic voltammetry (CV), linear sweep voltammetry (LSV), chronoamperometry (CA), AC impedance and scanning electron microscopy (SEM) techniques. The experiment results of CV, LSV and AC impedance indicated that MPS inhibited copper electrodeposition. The inhibition effect became strong with the increase of MPS concentration. However, it was found that MPS accelerated the electrocrystallization process of copper. The results of CA and SEM demonstrated that copper electrocrystallization from the electrolytes either with or without MPS followed instantaneous nucleation with three-dimensional growth. And the nuclear number density increased with the increase of the concentration of MPS.

Key words: MPS, copper, electrodeposition, electrocrystallization