Electrolyte-dependent pairwise particle motion near electrodes at frequencies below 1 kHz.
Electrolyte-dependent pairwise particle motion near electrodes at frequencies below 1 kHz.
复制标题
频率低于 1 kHz 时，电极附近依赖于电解质的成对粒子运动。
DOI：
10.1021/la070049j
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
D. Prieve
中科院分区：
文献类型：
--
作者：
J. Hoggard;P. Sides;D. Prieve
一个模型结合了一个相位角之间的施加电场和粒子的运动，它解释了电解质依赖的成对粒子运动附近的电极。该模型预测，当该相位角大于90度时，两个粒子聚集，但当相位角小于90度时，两个粒子分离，该模型主要基于与氧化铟锡（ITO）电极一起使用的两种电解质（KOH和NaHCO3）中的对比行为。目前的贡献扩大了这个模型的实验证据，KOH，NaHCO3，NaOH，NH4OH，KCl，和H2CO3溶液与Pt，以及ITO电极。在所有情况下验证了相位角相关性。模型预测的实验数据的比较表明，粒子对之间的分离距离的变化率的符号和数量级的正确预测。
A model incorporating a phase angle between an applied electric field and the motion of particles driven by it explains electrolyte-dependent pairwise particle motion near electrodes. The model, predicting that two particles aggregate when this phase angle is greater than 90 degrees but separate when the phase angle is less than 90 degrees , was based largely on contrasting behavior in two electrolytes (KOH and NaHCO3) used with indium tin oxide (ITO) electrodes. The present contribution expands the experimental evidence for this model to KOH, NaHCO3, NaOH, NH4OH, KCl, and H2CO3 solutions with Pt, as well as ITO electrodes. The phase angle correlation was verified in all cases. Comparisons of the model predictions to experimental data show that the sign and order of magnitude of rates of change in the separation distances between particle pairs are correctly predicted.