A sniftirs study of the diffuse double layer at single crystal platinum electrodes in acetonitrile
A sniftirs study of the diffuse double layer at single crystal platinum electrodes in acetonitrile
复制标题
乙腈中单晶铂电极扩散双层的嗅探研究
DOI：
10.1016/0013-4686(95)00352-5
复制
发表时间：
1996
影响因子：
6.6
通讯作者：
W. Fawcett
中科院分区：
文献类型：
--
作者：
N. Marinkovic;M. Hecht;J. Loring;W. Fawcett
用电化学调制的原位反射红外光谱研究了Pt（hkl）/乙腈体系的双电层结构。使用的电解质是高氯酸四乙铵和高氯酸钠。已经发现，乙腈优先通过氮原子上的非键合电子在零电荷点的正电位下化学吸附在表面上，或者在负电位下以再杂化形式在其一侧化学吸附。这些取向之间的过渡可以由本技术跟随。实验还用于研究溶剂化阳离子在双电层中的积累。的光谱数据进行了讨论相对于溶剂的取向和电解质离子在双层的位置。
In situ reflection infrared spectroscopy with electrochemical modulation has been used to investigate the structure of the double layer for the system: Pt(hkl)/acetonitrile. The electrolytes used were tetraethylammonium perchlorate and sodium perchlorate. It has been found that acetonitrile is preferentially chemisorbed on the surface either through the non-bonding electrons on the nitrogen atom at potentials positive of the point of zero charge, or on its side in a rehybridized form at negative potentials. The transition between these orientations can be followed by the present technique. The experiments were also used to study the accumulation of solvated cations in the double layer. The spectroscopic data are discussed with respect to the orientation of the solvent and location of the electrolyte ions in the double layer.