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本文利用共焦显微拉曼系统 ,获得有机乙醇溶剂中吡啶分子吸附在硝酸刻蚀镍电极表面的拉曼光谱 ,与水体系相比谱峰强度有所降低。根据表面拉曼光谱中吡啶分子环呼吸振动峰 ν1向高波数方向移动 (与液态吡啶分子相比 )推测吡啶分子通过氮原子以垂直 (或略微倾斜 )方式作用于镍电极表面 ,且随电位负移其与镍表面的作用逐渐减弱。
In this paper, the Raman spectra of pyridine molecules adsorbed on the surface of nitric acid-etched nickel electrode in organic ethanol solvent were obtained by confocal microscopy Raman system. Compared with water system, the intensity of the peak decreased. According to the vibrational peak ν1 of pyridine ring in the Raman spectrum of the surface, it moves in the direction of higher wavenumber (compared with the liquid pyridine molecule). It is speculated that the pyridine molecule acts on the surface of nickel electrode vertically (or slightly tilted) through the nitrogen atom, The effect of shifting its surface with nickel gradually diminished.