Experimental Conditions and Data Acquisition

FIGURE 25. Voltammogram of a Pt electrode in the supporting electrolyte (0.5 M H2SO4) at a sweep rate of 50 mV s  

As the experiment gives a value within 1% of Qh, it is concluded that the model is correct and that hydrogen adsorbs on platinum at one atom per site. 

The first conclusion is thus that there are strong interactions between hydrogen and water and that the adsorption of hydrogen is accompanied by an increased quantity of water bonded to the surface. 

Interpretation of the results requires a knowledge of the orientation of the water molecules on the platinum surface and the mechanism of infrared radiation absorption. 

FIGURE 26. EMIRS spectra obtained for the vibrational modes of H2O with 1 M H2SO4 using different modulation limits. After Bewick and Russell.  

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