[3Ca01-12] SS2

[3Ca12S] Nitrous oxide reduction at tin-modified platinum-palladium single crystalline electrodes

*JINHANG ZHENG¹, MASARU KATO^1,2, ICHIZO YAGI^1,2 (1. Graduate School of Environmental Science, Hokkaido University, 2. Faculty of Environmental Earth Science, Hokkaido University)

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.