高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (10): 1312.

• 论文 • 上一篇    下一篇

线性扫描伏安法研究(Ⅰ)--微盘电极上准稳态可逆波方程式及其验证

张祖训, 王晓平, 吴志斌   

  1. 南京大学化学系, 南京, 210008
  • 收稿日期:1990-05-21 出版日期:1991-10-24 发布日期:1991-10-24
  • 通讯作者: 张祖训
  • 基金资助:

    国家自然科学基金

Investigation of Linear Sweep Voltammetry(Ⅰ)--The Equation of Quasi-Steady-State Reversible Wave at the Microdisk Electrode and Its Experimental Verification

Zhang Zu-xun, Wang Xiao-ping, Wu Zhi-bin   

  1. Department of Chemistry, Nan jing University, Nanjing, 210008
  • Received:1990-05-21 Online:1991-10-24 Published:1991-10-24

摘要: 本文报道微盘电极上线性扫描伏安法准稳态可逆波方程式,并成功地进行了验证,理论和实验结果十分符合。

关键词: 线性扫描伏安法, 微盘电极, 准稳态可逆波

Abstract: An approximate expression for guasi-steady-state reversible wave at the microdisk electrode is derived in the following form. i = 4nFDRT0CR*∫(P)θ/(1+θ), where i is the current, DRthe diffusion coefficient, T0the radius of the electrode, CR* the bulk concentration, P=(nFT02v/PTDR)1/2 and θ=exp[nF(E-E0)/RT], the equation holds for P<1. In order to examine the validity of the equation, experimental studies with Fe(CN)64-ions in 0. 5 mol/L KCl solution were carried out at the platinum disk (r0=29. 9 μm) electrode. The experimental voltammograms are in good agreement with the theoretical ones.

Key words: Linear sweep voltammetry, Microdisk electrode, Quasi-steady-state reversible wave

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