Credit: Image courtesy of K. Ding and P.C. Stair.
Scientists discovered that for carbon dioxide production (oxidation and water-gas shift (WGS)), the active sites are associated with platinum (Pt) nanoparticles, not single platinum atoms. The aberration-corrected high-angle annular dark-field image shows single platinum atoms in the wet-impregnated 1 wt% Pt/SiO2.