Structure Sensitivity in CH 4 Oxidation: Switching C 1 to C 2 Selectivity on Mn Single Atoms Versus Nanoparticles - Wenjun Yu; Lulu Chen; Geqian Fang; Xiaoli Pan; Lin Li; Sen Lin; Xiaodong Wang; Jian Lin; Xianzhi Fu; Tao Zhang (Journal of the American Chemical Society, 2026)