| 玻碳电极肉桂酸添加剂对锌电沉积的影响 |
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| 引用本文： | 李凯,陈棽,刘深娜,陈碧桑,林珩,陈国良,汪庆祥. 玻碳电极肉桂酸添加剂对锌电沉积的影响[J]. 电化学, 2013, 19(3): 267-274 |
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| 作者姓名： | 李凯 陈棽 刘深娜 陈碧桑 林珩 陈国良 汪庆祥 |
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| 作者单位： | 漳州师范学院化学与环境科学系，福建 漳州 363000 |
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| 基金项目： | 国家自然科学基金项目(No.20805041);福建省科技厅高校产学研重大项目(No.2010H6029);福建省教育厅科技项目(No.JA10208);漳州师范学院研究生教育创新基地资金项目资助 |
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| 摘 要： | 用循环伏安法、计时电位法研究了玻碳电极肉桂酸添加剂对锌电沉积机理及成核过程的影响. 研究表明，含肉桂酸基础镀液中还原仍为Zn2+ + 2e → Zn，但肉桂酸能促进锌成核，改变锌沉积的动力学过程. 在基础镀液锌成核机理为3D-瞬时成核过程，加肉桂酸后锌的成核机理趋于3D-连续成核过程，其活性位点数增加，成核速率减小.
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| 关 键 词： | 锌电沉积 肉桂酸 成核及核生长 计时电流法 |
| 收稿时间： | 2012-04-18 |
Influences of the Cinnamic Acid on Zinc Electrodeposition at Glassy-Carbon Electrode |
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| LI Kai,CHEN Shen,LIU Shen-na,CHEN Bi-sang,LIN Heng,CHEN Guo-liang,WANG Qing-xiang. Influences of the Cinnamic Acid on Zinc Electrodeposition at Glassy-Carbon Electrode[J]. Electrochemistry, 2013, 19(3): 267-274 |
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| Authors: | LI Kai CHEN Shen LIU Shen-na CHEN Bi-sang LIN Heng CHEN Guo-liang WANG Qing-xiang |
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| Affiliation: | (Department of Chemistry and Environment Science,Zhangzhou Normal University,Zhangzhou 363000,Fujian,China) |
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| Abstract: | The influences of cinnamic acid (CIN) on the mechanism of Zn deposition and nucleation kinetics onto glassy-carbon electrode were studied by cyclic voltammetry (CV) and chronoamperometry (CA). The results revealed that the zinc reduction took place via Zn2+ + 2e → Zn in the presence of CIN, but the kinetics of zinc deposition was changed and the formation rate of zinc nuclei was accelerated. In the absence of CIN, the mechanism of zinc nucleation followed the 3D-instantaneous diffusion-controlled nucleation, while the 3D-progressive diffusion-controlled nucleation in the presence of CIN. The addition of CIN reduced the nucleation rate, but increased the number of active sites as compared with those obtained without CIN. |
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