Beyond Geometric Effects: Particle Size-Dependent Electronic Promotion in Ru Catalysts for Ammonia Synthesis - Yaejun Baik; Seunghyuck Chi; DongHwan Oh; Susung Lee; Kyeongjin Lee; Chanyoung Oh; Minho M. Kim; Dooam Paik; Minju Chung; Hyungjun Kim; Minkee Choi (Journal of the American Chemical Society, 2026)