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Corresponding Author

Guo-liang CHEN

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.

Keywords

zinc elecreodeposition, cinnamic acid, nucleation and growth, chronoamperometry

Publication Date

2013-06-28

Online Available Date

2012-05-31

Revised Date

2012-05-24

Received Date

2012-04-18

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