Cocatalysis - Role of Organic Cations in Oxygen Evolution Reaction on Oxide Electrodes
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2018-07-31 |
| Journal | ACS Applied Materials & Interfaces |
| Authors | Marija R. ZoriÄ, Usha Pandey Kadel, Ksenija D. Glusac |
| Institutions | Bowling Green State University, University of Illinois Chicago |
| Citations | 7 |
Abstract
Section titled āAbstractāCocatalysis is a promising approach toward enhanced electrocatalytic activity. We report such synergic catalysis involving organic xanthylium-based catalyst, Xan<sup>2+</sup>, and oxides formed on the electrode surface. The oxygen evolution reaction (OER) was observed on some working electrodes (gold, platinum, glassy carbon, boron-doped diamond), while others (titanium and fluorine-doped tin oxide) exhibited no OER activity. On the basis of experimental data and supported by calculations, we propose a mechanism in which oxidized Xan<sup>2+</sup> activates electrode toward the rate-determining O-O bond formation. In light of our findings, efficient OER electrocatalysis can be achieved using materials that strongly bind oxygen species and electron-deficient organic cations.