Low Bandgap NiCo 2 S 4 Nanoparticles Decorated 2D‐BiOBr Nano Pallets: Atomic Level Insight into the Active Sites for Photocatalytic H 2 O 2 Production

production. Results confirm that it follows a dual-step two-electron transfer pathway for oxygen reduction reaction (ORR), with obvious superoxide formation as an intermediate step. Computational calculations critically explain the synergistic role of both "Ni" and "Co" centers as active sites for overall photocatalysis.