To further unravel the origin of structural rearrangements and to gain in-depth insights into intrinsic catalytic mechanisms, highly crystalline CoS2, CoS/CoS2, CoS, CoS/Co9S8, Co3O4-ZIF, and Co-LDH were prepared and characterized with a wide range of techniques (Figures ). Our results show that similar cubic architectures are present in the as-prepared CoS2, CoS/CoS2, CoS, CoS/Co9S8, and Co3O4-ZIF. In contrast, the as-obtained Co-LDH displays a hexagonal nanosheet morphology.