Measurement of the surface charge density of CO-saturated Pt(111) electrodes as a function of potential: the potential of zero charge of Pt(111)
Measurement of the surface charge density of CO-saturated Pt(111) electrodes as a function of potential: the potential of zero charge of Pt(111)
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DOI：
10.1016/j.susc.2004.08.014
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发表时间：
2004-11-10
期刊：
影响因子：
1.9
通讯作者：
Cuesta, A
中科院分区：
文献类型：
--
作者：
Cuesta, A
通过测量在0.1MHClO4溶液中，在控制电位下，镀钴的铂(111)电极的电荷流动，得到了相应的表面电荷密度-电位曲线，并由此得到了镀钴的铂(111)电极的零电荷电位(PZC)。由这些数据估计，用共电荷位移法测定铂(111)电极的零总电荷电势(Pztc)时产生的误差为。在pH为1时约为50 mV，在pH为3时约为90 mV。此外，实验测定的CO包覆的铂(111)电极的PZC使我们能够估计铂(111)电极的零自由电荷(Pzfc)。(C)2004爱思唯尔B.V.保留所有权利。
From measurements of the charge flowing upon immersion, at controlled potential, of a CO-covered Pt(111) electrode in a 0.1 M HClO4 solution, the corresponding surface charge density vs. potential curve was obtained, and from this the potential of zero charge (pzc) of the CO-covered Pt(111) electrode. From these data it was estimated that the error incurred when the potential of zero total charge (pztc) of Pt(111) electrodes is determined by the CO-charge displacement method is. of approximately 50 mV at pH 1 and of approximately 90 mV at pH 3. Furthermore, the experimentally determined pzc of the CO-covered Pt(111) electrode has allowed us to make an estimation of the potential of zero free charge (pzfc) of Pt(111) electrodes. (C) 2004 Elsevier B.V. All rights reserved.