Preparation of nanostructured cobalt thin film electrode and its abnormal infrared effects
- 化学化工－已发表论文 
Nanostructured thin film of cobalt supported on glassy carbon (nm-Co/GC) was prepared by electrochemical deposition under cyclic voltammetric conditions. SEM studies illustrated that the Co film was composed of most irregularly small Co nanoparticles with an average size of 150 nm and a few large Co particles of diameter ranging from 400 nm to 500 nm. In situ MR spectroscopy employing CO adsorption as the probe reaction revealed that the nanostructured Co film exhibited abnormal infrared effects. The unique anomalous IR features of CO adsorbed on nm-Co/GC consist of. the inversion of the COad IR bands, the significant enhancement of IR absorption of COad, and the large Stark effect as well as broadening of the COad IR bands ( the: FWHM of COL on nin-Co/GC is 8 cm(-1) larger than that on bulk Co). The current investigation can extend the study of mires to nanomaterials of metals of iron family, and gain an insight into the origin of particular properties of nanomaterials.