玻碳电极表面氧化物的现场红外反射光谱电化学研究

IN-SITU INFRARED REFLECTANCE SPECTROSCOPIC INVESTIGATION OF OXIDE ON THE SURFACE OF GLASSY CARBON ELECTRODE

碳材料是广泛使用的电极材料之一,其表面氧化物的存在与性质对电极性能有很大的影响;有人曾对此进行过不少的研究,但对现场振动光谱电化学的研究报道尚少,文献上只见到有关拉曼光谱的实验结果。本文报道利用现场红外反射光谱电化学方法研究玻碳电极表面氧化物所得到的一些结果。

A preliminary study of oxide on the surface of glassy carbon electrode by the use of in-situ infrared reflection spectroelectrochemical method has been done. In the electrochemical polarization of carbon electrode by high anodic potential(>1.6V vs. SCE) , the formation of adsorbed carbon monooxide, microcrystal graphite, as well as other oxide species on the surface of carbon electrode can be detected. Ester and acid anhydride are proposed to be two main oxide species being produced on the surface of glassy carbon electrode.