Charge Separation and/or Hot Spots: Clarification of Efficient CO 2 Reduction over Ru–Ni Nanoparticles Compared to Photocatalysis on Ru–Ni–ZrO 2 Composites - Masahito Sasaki; Tomoki Oyumi; Keisuke Hara; Hongwei Zhang; Yasuo Izumi (Journal of the American Chemical Society, 2026)