Nitrous oxide reduction at tin-modified platinum-palladium single crystalline electrodes

抄録

The electrocatalytic N₂ORR activity of noble metals such as Pt is widely studied, and polycrystalline Pd gives the smallest overpotential for the N₂ORR. Tin modification is considered as a promoter that can improve the catalytic activity at Pt or Pd surfaces for electrochemical nitrate reduction. However, there is a lack of studies on the effect of tin-coverage of noble metal electrodes on the electrochemical N₂ORR. Herein, in this work, Pd-Pt alloy (111) and (100) single crystalline electrodes are modified with different surface coverages of Sn and then used for the N₂ORR to discuss the impact of Sn-coverage on the N₂ORR activity.