Fig. 1: Structure of Mg/Al-LDH and Mg/Al-LDO.

Schematic structure of Mg/Al-LDH (a) and Mg/Al-LDO (b) in the side and top views. The shaded green circles show the local environment of Mg2AlOH (1) and Mg3OH (2).

Schematic structure of Mg/Al-LDH (a) and Mg/Al-LDO (b) in the side and top views. The shaded green circles show the local environment of Mg2AlOH (1) and Mg3OH (2).