A MAJOR FACTOR CONTROLLING THE SERS BAND INTENSITY OF PYRIDINE ADSORBED ON A SILVER ELECTRODE

SERS intensity of pyridine has been examined as a function of the amount of charge necessary for the formation of Ag atom during the ORC procedure in each of several electrolytes. The amount of the reduction charge was controlled so as to hold a constant value of around 50 mC cm-2. Although the efficiency of charge recovery in the reduction process with nonhalide ion was very poor compared with chloride ion, intense SERS bands as large as in the case of chloride ion were found even in the case of non-halide ion.