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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (20): 2269-2274.    下一篇

研究论文

CO32-对羟基乙叉二膦酸体系铜电结晶的影响

郑精武 周杰  乔梁 姜力强*   张诚    俞斌   

  1. (浙江工业大学化学工程与材料学院 杭州 310032)
  • 投稿日期:2009-03-22 修回日期:2009-05-21 发布日期:2009-06-25
  • 通讯作者: 姜力强 E-mail:jiliqi@zjut.edu.cn
  • 基金资助:

    浙江省自然科学基金（Y406406）资助项目

Influence of CO3 2- on Copper Electrocrystallization from 1-Hydroxyethylidene-1,1-Diphosphonic Acid Baths

Zheng, Jingwu; Zhou, Jie ;Qiao, Liang ;Jiang, Liqiang*; Zhang, Cheng ;Yu, Bin   

  1. (Department of Chemical Engineering and Materials, Zhejiang University of Technology, Hangzhou 310032)
  • Received:2009-03-22 Revised:2009-05-21 Published:2009-06-25

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采用循环伏安和计时安培法研究了羟基乙叉二膦酸(HEDPA)镀铜液中铜在玻碳电极上电结晶的初期行为。结果表明：羟基乙叉二膦酸(HEDPA)镀铜体系中，铜的电沉积过程经历了晶核形成过程；当溶液中不含CO32-时，其电结晶按连续三维成核方式进行，而CO32-的加入，使得铜电结晶按瞬时三维成核方式进行；成核数密度都随着电位的提高而增加。这可能是CO32- -以第二配体形式进入HEDPA和Cu2+构成的络合结构，从而形成更稳定的络合物吸附在电极表面所致。

关键词: 羟基乙叉二膦酸(HEDPA), 铜电沉积, 电结晶

The initial stage of copper electrodeposition and the influence of CO32- ions on the nucleation and growth of copper on glass carbon from a 1-hydroxyethylidene-1,1-diphosphonic acid (HEDPA) electrolyte was investigated using cyclic voltammetry (CV) and chronoamperometry (CA) techniques. The nucleation is in a good agreement with the progressive nucleation and three-dimensional (3D) growth for the solutions without CO32-, while instantaneous nucleation with three-dimensional growth was found for the electrolyte with CO32-.There was an increase in the nuclear number density of nuclei at the surface with the increase of potential.The possible explanation for this result was that CO32- could enter the complex to stable the Cu in the structure as the second ligand and formed a kind of more stable complex compound ,which was adsorbed on the surface of electrode.

Key words: 1-hydroxyethylene-1,1-diphosphonic acid, copper electrodeposition, electrocrystallization

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