Strong Anion/Surface Interactions: Perchlorate Reduction on Rh(100) ElectrodeStudied by Voltammetry

摘要

Despite common knowledge, the principles which govern interactions of simpleinorganic anions with surfaces of solid metal electrodes are poorly understood. For instance, a generally perceived view that coulombic interactions between the charged electrode and sulfate (bisulfate) anions control their surface population breaks down on Th(111): a broad potential range was identified where surface concentration of the anions was potential independent. Considered inert for decades, such anions as sulfates display a behavior easily interpretable along the assumption of their discharge on some crystallographic planes of platinum or gold . It has also been postulated that on Pt(111) and Rh(111) sulfates and water molecules create a relatively rigid network which possesses some surface properties not shown by suface anion/water monolayers on polycrystalline substrates.