pH Effect on Oxidation of Hydrogen Peroxide on Au(111) Electrode in Alkaline Solutions
- Received Date: 2018-04-11
Abstract: The hydrogen peroxide oxidation reaction (HPOOR) on Au(111) electrode in alkaline solutions with pH values ranging from 10 to 13 was examined systematically. HPOOR activityincreased and the slope of the i-E curve decreased with increasing pH. HO2- is suggested to be the main reactive intermediate for HPOOR in alkaline media. The fast kinetics for HPOOR in alkaline solution is facilitated by the electrostatic interaction between the positively charged electrode and the reactive anions (i.e., HO2- and HO-), which increases the concentration of these reactants and the thermodynamic driving force for HO2- oxidation at the reaction plane.
|Citation:||Jiao-jiao Li, Jie Wei, Jun Cai, Yan-xia Chen. pH Effect on Oxidation of Hydrogen Peroxide on Au(111) Electrode in Alkaline Solutions[J]. Chinese Journal of Chemical Physics , 2018, 31(6): 779-783. doi: 10.1063/1674-0068/31/cjcp1804064|