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Citation: ZHENG Jing-Wu, JIANG Mei-Yan, QIAO Liang, JIANG Li-Qiang, SHENG Jia-Wei, ZHANG Cheng. Influence of CO^2-₃ on Copper Electrodeposion from 1-Hydroxyethylidene-1,1-diphosphonic Acid Baths[J]. Acta Physico-Chimica Sinica, ;2008, 24(09): 1733-1738. doi: 10.3866/PKU.WHXB20080937 shu

Influence of CO^2-₃ on Copper Electrodeposion from 1-Hydroxyethylidene-1,1-diphosphonic Acid Baths

1.
College of Chemistry and Materials Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China

Received Date: 28 March 2008
Available Online: 4 July 2008

The effect of CO2-3 on copper electrodeposits from 1-hydroxyethylidene-1,1-diphosphonic acid (HEDPA) baths was investigated over a wide range of concentration by electrochemical measurements, XRD, and IR spectra of the complex. It could be seen from potentiodynamic polarization curves that CO2-3 in the bath could not only enhance the cathodic polarization but also promote anodic dissolution. The X-ray diffraction results indicated the changing of preferred orientation of the copper deposits, from a preferential growth orientation (222) plane containing little CO2-3 to (111) plane containing more CO2-3. The IR spectra of the solid complex purified from the bath showed that CO2-3 could enter the complex and stabilize Cu2+ in the structure as the second ligand, so the potential of copper deposition was negatively shifted and the (111) plane orientation was preferred.
- 1-Hydroxyethylidene-1,1-diphosphonic acid; Copper deposits; Preferred orientation
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Influence of CO2-3 on Copper Electrodeposion from 1-Hydroxyethylidene-1,1-diphosphonic Acid Baths

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通讯作者: 陈斌, bchen63@163.com

Influence of CO^2-₃ on Copper Electrodeposion from 1-Hydroxyethylidene-1,1-diphosphonic Acid Baths