Pd–Pt Tesseracts for the Oxygen Reduction Reaction

Hollow frame structures are of special interest in the realm catalysis since they hold only ridges and hollow interiors, enabling accessibility active sites to most extent. Herein, we prepared Pd–Pt composed double-shell cubes linked by body diagonals as an efficient catalyst toward oxygen reduction reaction (ORR), inspired 4D analogue a cube, denoted tesseract. The etching process involves selective removal Pd atoms subsequent rearrangement remaining Pt atoms. successful preparation tesseracts via lies selection Pd/Pt ratio initial nanocubes. With various ratios nanocubes templates, obtained octapods, tesseracts, nanoframes, respectively. During ORR, exhibited highest mass activity 1.86 A mg–1Pt among these nanocrystals. On basis mechanistic studies, high derived from optimal adsorption energy due facet effect composition effect.