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Acta Physico-Chimica Sinica  2004, Vol. 20 Issue (04): 382-385    DOI: 10.3866/PKU.WHXB20040410
Article     
Kinetics of Dissociative Adsorption of Ethylene Glycol on Pt(111) Electrode
Fan You-Jun;Fan Chun-Jie;Zhen Chun-Hua;Chen Sheng-Pei;Sun Shi-Gang
State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005
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Abstract  The dissociative adsorption of ethylene glycol (EG) on Pt(111) electrode has been investigated with electrochemical cyclic voltammetry and programmed potential step technique. The quantitative results demonstrated that the average rate of dissociative adsorption of ethylene glycol on Pt(111) electrode depends on electrode potentials, yielding a distribution of volcanic shape on adsorption potentials between -0.20 and 0.35 V with the maximum value of 3.90×10-12 mol•cm-2•s-1 located near 0.10 V(vs SCE).From the variation of the quantity of dissociative adsorbates determined through the oxidation charge with adsorption time (tad), the initial rate (vi) of this surface reaction has been evaluated quantitatively. The maximum of vi was ascertained to be 4.35×10-12 mol•cm-2•s-1 at 0.10 V for a solution containing 2×10-3 mol•L-1 EG.

Key wordsEthylene glycol      Dissociative adsorption      Pt(111) electrode      Surface reaction kinetics      Programmed potential step technique     
Received: 06 October 2003      Published: 15 April 2004
Corresponding Authors: Sun Shi-Gang     E-mail: sgsun@xmu.edu.cn
Cite this article:

Fan You-Jun;Fan Chun-Jie;Zhen Chun-Hua;Chen Sheng-Pei;Sun Shi-Gang. Kinetics of Dissociative Adsorption of Ethylene Glycol on Pt(111) Electrode. Acta Physico-Chimica Sinica, 2004, 20(04): 382-385.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20040410     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2004/V20/I04/382

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