Study on electrocatalytic oxidation of sec-butyl alcohol on pt electrode modified with adatoms
- 化学化工－已发表论文 
The processes of adsorption and oxidation of sec-butyl alcohol on Pt electrode and Pt electrodes modified with Sb and S (Pt/Sb-ad and Pt/S-ad) were studied by using cyclic voltammetry and electrochemical quartz crystal microbalance (EQCM). The results demonstrated that the oxidation of sec-butyl alcohol depends strongly on oxidation states of electrode surface. Sb adatoms on Pt surface can adsorb oxygen at relatively low potentials, and exhibit catalytic effects for sec-butyl alcohol oxidation, In comparison with the case of Pt electrode, the oxidation peak potential of sec-butyl alcohol on Pt surface modified with Sb was negatively shifted about 100 mV. On the contrary, the oxidation of S adatoms consumes oxygen species on Pt electrode surface. As a consequence, the oxidation of sec-butyl alcohol was inhibited by the presence of S-ad. The EQCM studies provided quantitative results of surface mass changes during sec-butyl alcohol oxidation, and have thrown new light on elucidating different effects of adatoms Sb-ad and S-ad on Pt electrode towards sec-butyl alcohol oxidation.