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电化学(中英文) ›› 2001, Vol. 7 ›› Issue (1): 90-95. 

• 研究论文 • 上一篇    下一篇

钒化合物对酸性镀锡溶液的稳定作用

牛振江,林飞峰,杨防祖,姚士冰,周绍民   

  1. 厦门大学化学系固体表面物理化学国家重点试验室物理化学研究所 福建厦门361005,厦门大学化学系固体表面物理化学国家重点试验室物理化学研究所 福建厦门361005,厦门大学化学系固体表面物理化学国家重点试验室物理化学研究所 福建厦门361005,厦门大学化学系固体表面物理化学国
  • 收稿日期:2001-02-28 修回日期:2001-02-28 出版日期:2001-02-28 发布日期:2001-02-28

Effects of a Vanadium Compound on the Stability of an Acidic Tin(II) Plating Solution

NIU Zhen jiang *, LIN Fei feng,YANG Fang zu, YAO Shi bing, ZHOU Shao min   

  1. (Dept. of Chem., State Key Lab. for Phy. Chem. of Sol. Surf.Inst. of Phys. Chem., Xiamen Univ., Xiamen 361005
  • Received:2001-02-28 Revised:2001-02-28 Published:2001-02-28 Online:2001-02-28

摘要: 研究了钒化合物稳定剂对酸性SnSO4 溶液稳定性的影响 .可见光谱分析表明稳定剂中主要含有VO2 + 和少量的V3+ ,循环伏安实验显示在 - 0 .2 0~ - 0 .55V(vs .SCE)电位范围内VO2 + 能够在阴极上还原为V3+ ,在更负的电位下V3+ 能进一步还原到V2 + .实验结果说明稳定剂中的低价钒离子有效地清除了镀液中的溶解氧 ,因而防止了Sn2 + 离子的氧化 ,显著地提高了酸性锡镀液的稳定性 .

关键词: 钒化合物, 酸性镀锡, 稳定作用

Abstract: The effects of a vanadium compound on the stability of an acidic solution of tin(Ⅱ) sulfate were studied . The electron spectra of the solutions of stabilizer showed that the vanadium existed mainly in VO 2+ with a small amount of V 3+ in the stabilizer. The results of cyclic voltammetry revealed that VO 2+ can be further reduced to V 3+ on the cathode surface in potential range -0.2~-0.55 V(vs. SCE) and V 3+ to V 2+ at the potential more negative than -0.55 V. Both V 3+ and V 2+ can effectively eliminate the dissolved oxygen in the bath hence prevent Sn 2+ from oxidizing, which remarkably increased the stability of the tin (II) sulfate solution.

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