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本文用现场红外反射吸收光谱电化学方法和循环伏安法研究了Pt电极表面及附近水的行为.据不同范围内得到的SNIFTIRS 谱中水峰的变化提出了三种可能的解释:(A)电极上水的吸附取向的改变;(B)电极附近水分子的长程有序的变化;(C)电极上水的氧化及还原,Pt-O化合物的形成导致薄层中水量的减少。
In this paper, the behavior of water on the surface of Pt electrode and its vicinity has been studied by field infrared absorption spectroscopy and cyclic voltammetry.According to the variation of water peak in SNIFTIRS spectra obtained in different ranges, three possible explanations are proposed: (A) (B) the long-range orderly change of water molecules near the electrode; (C) the oxidation and reduction of water on the electrode, the formation of a Pt-O compound leads to a decrease of the amount of water in the thin layer.