ESTABLISHMENT OF NEW RESEARCH SYSTEM TO COMBINE ELECTROCHEMISTRY AND ELECTRON-SPECTROSCOPY AND THE INVESTIGATIONS OF SURFACE CHEMICAL-STATES OF PT/BI-AD ELECTRODE
A new research system, which allows samples to be transferred rapidly and without contamination between electrochemical environment and ultra-hight-vacuum chamber, has been set up recently. This system is of interest to combine investigations on structure and properties of solid surface at both solid/liquid and solid/gas interfaces. The prelimiary study of Pt/Bi-ad electrode at levels of chemical environment and electronic structure demonstrated the success of the system established. The XPS data indicate that two oxidation states of Bi adatom existe on Pt/Bi-ad electrode surface. The present results give new interpretation of the promoting mechanism of Bi adatom in electrocatalysis
