Fig. 4.
Percentage of electrons released as PROS for catalysts 1a, 2a, and 2b on either (A) SAM S1 or (B) SAM S2. Data taken at 0.1 V versus NHE in air-saturated electrolyte buffered at pH = 7. The catalyst coverage on either SAM was 4 × 10−11 moles cm−2. Ring-disk assembly was rotated at 300 revolutions per minute. Error bars indicate standard deviation from the mean.