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首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Kinetics of Two-Dimensional Phase Transitions of Sulfide and Halide Ions on Ag(111)
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Kinetics of Two-Dimensional Phase Transitions of Sulfide and Halide Ions on Ag(111)

机译：Ag（111）上硫化物和卤化物离子的二维相变动力学

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摘要

The kinetics of two-dimensional phase transitions of sulfide, iodide, bromide, and chloride ions on Ag(111) was investigated at anionic concentrations ranging from 1 * 10~(-4) to 1 * 10~(-3) M by measuring the time dependence of the charge following steps from a potential negative enough to exclude anionic adsorption to a potential in the range of stability of either the first or the second, more compressed, ordered overlayer of the anions. The kinetic behavior is interpreted by a model that accounts for diffusion-controlled random adsorption of the anions, followed by progressive polynucleation and growth. When stepping to the potential range of stability of the second overlayer, the kinetic behavior is accounted for by assuming that the passage from total desorption to the second overlayer occurs via the intermediate formation of the first one.
机译：通过在1 * 10〜（-4）到1 * 10〜（-3）M的阴离子浓度下研究了硫化物，碘化物，溴化物和氯离子在Ag（111）上的二维相变动力学。电荷随时间的变化从负的足以排除阴离子吸附的负电位到第一个或第二个压缩程度更大的有序阴离子的稳定范围内的电位。动力学行为由一个模型解释，该模型解释了阴离子的扩散控制随机吸附，然后逐步进行多核化和生长。当逐步达到第二覆盖层的潜在稳定性范围时，通过假定从总解吸到第二覆盖层的过渡是通过第一层的中间形成发生的，来解释动力学行为。

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